simply free() calls

free() can handle NULL so there's no need to check this ourselves

12 files changed, 50 insertions, 154 deletions

diff --git a/nx-X11/programs/Xserver/hw/nxagent/Args.c b/nx-X11/programs/Xserver/hw/nxagent/Args.c
index 2b8d44388..ea970be02 100644
--- a/nx-X11/programs/Xserver/hw/nxagent/Args.c
+++ b/nx-X11/programs/Xserver/hw/nxagent/Args.c
@@ -729,12 +729,8 @@ int ddxProcessArgument(int argc, char *argv[], int i)
     {
       int size;
 
-      if (nxagentKeyboard != NULL)
-      {
-        free(nxagentKeyboard);
-
-        nxagentKeyboard = NULL;
-      }
+      free(nxagentKeyboard);
+      nxagentKeyboard = NULL;
 
       if ((size = strlen(argv[i])) < 256)
       {
diff --git a/nx-X11/programs/Xserver/hw/nxagent/Clipboard.c b/nx-X11/programs/Xserver/hw/nxagent/Clipboard.c
index d26d3524a..f34849d9a 100644
--- a/nx-X11/programs/Xserver/hw/nxagent/Clipboard.c
+++ b/nx-X11/programs/Xserver/hw/nxagent/Clipboard.c
@@ -974,11 +974,8 @@ void nxagentNotifySelection(XEvent *X)
           }
 
           /*
-           * if (pszReturnData)
-           * {
-           *   free(pszReturnData);
-           *   pszReturnData=NULL;
-           * }
+           * free(pszReturnData);
+           * pszReturnData=NULL;
            */
 
         }
@@ -1500,11 +1497,8 @@ int nxagentInitClipboard(WindowPtr pWin)
   fprintf(stderr, "nxagentInitClipboard: Got called.\n");
   #endif
 
-  if (lastSelectionOwner != NULL)
-  {
-    free(lastSelectionOwner);
-    lastSelectionOwner = NULL;
-  }
+  free(lastSelectionOwner);
+  lastSelectionOwner = NULL;
 
   lastSelectionOwner = (SelectionOwner *) malloc(2 * sizeof(SelectionOwner));
 
diff --git a/nx-X11/programs/Xserver/hw/nxagent/Colormap.c b/nx-X11/programs/Xserver/hw/nxagent/Colormap.c
index c21bcbbe7..401f05b94 100644
--- a/nx-X11/programs/Xserver/hw/nxagent/Colormap.c
+++ b/nx-X11/programs/Xserver/hw/nxagent/Colormap.c
@@ -257,8 +257,7 @@ void nxagentSetInstalledColormapWindows(ScreenPtr pScreen)
   free(icws.cmapIDs);
 
   if (!nxagentSameInstalledColormapWindows(icws.windows, icws.numWindows)) {
-    if (nxagentOldInstalledColormapWindows)
-      free(nxagentOldInstalledColormapWindows);
+    free(nxagentOldInstalledColormapWindows);
 
 #ifdef _XSERVER64
     {
@@ -318,13 +317,12 @@ void nxagentSetInstalledColormapWindows(ScreenPtr pScreen)
 #endif /* DUMB_WINDOW_MANAGERS */
   }
   else
-    if (icws.windows) free(icws.windows);
+    free(icws.windows);
 }
 
 void nxagentSetScreenSaverColormapWindow(ScreenPtr pScreen)
 {
-  if (nxagentOldInstalledColormapWindows)
-    free(nxagentOldInstalledColormapWindows);
+  free(nxagentOldInstalledColormapWindows);
 
 #ifdef _XSERVER64
   {
diff --git a/nx-X11/programs/Xserver/hw/nxagent/Drawable.c b/nx-X11/programs/Xserver/hw/nxagent/Drawable.c
index 917f460ba..c3d27073e 100644
--- a/nx-X11/programs/Xserver/hw/nxagent/Drawable.c
+++ b/nx-X11/programs/Xserver/hw/nxagent/Drawable.c
@@ -264,7 +264,7 @@ int nxagentSynchronizeDrawableData(DrawablePtr pDrawable, unsigned int breakMask
 
         success = 0;
 
-        goto nxagentSynchronizeDrawableDataFree;
+        goto nxagentSynchronizeDrawableDataEnd;
       }
 
       ValidateGC(pDrawable, pGC);
@@ -282,7 +282,7 @@ int nxagentSynchronizeDrawableData(DrawablePtr pDrawable, unsigned int breakMask
 
       success = 1;
 
-      goto nxagentSynchronizeDrawableDataFree;
+      goto nxagentSynchronizeDrawableDataEnd;
     }
     else if (nxagentReconnectTrap == 1)
     {
@@ -323,7 +323,7 @@ int nxagentSynchronizeDrawableData(DrawablePtr pDrawable, unsigned int breakMask
 
           success = 0;
 
-          goto nxagentSynchronizeDrawableDataFree;
+          goto nxagentSynchronizeDrawableDataEnd;
         }
 
         ValidateGC(pDrawable, pGC);
@@ -336,7 +336,7 @@ int nxagentSynchronizeDrawableData(DrawablePtr pDrawable, unsigned int breakMask
 
         success = 1;
 
-        goto nxagentSynchronizeDrawableDataFree;
+        goto nxagentSynchronizeDrawableDataEnd;
       }
       else
       {
@@ -349,7 +349,7 @@ int nxagentSynchronizeDrawableData(DrawablePtr pDrawable, unsigned int breakMask
 
         success = 1;
 
-        goto nxagentSynchronizeDrawableDataFree;
+        goto nxagentSynchronizeDrawableDataEnd;
       }
     }
   }
@@ -363,14 +363,8 @@ int nxagentSynchronizeDrawableData(DrawablePtr pDrawable, unsigned int breakMask
 
   success = nxagentSynchronizeRegion(pDrawable, NullRegion, breakMask, owner);
 
-nxagentSynchronizeDrawableDataFree:
-
-  if (data != NULL)
-  {
-    free(data);
-  }
-
 nxagentSynchronizeDrawableDataEnd:
+  free(data);
 
   return success;
 }
@@ -866,10 +860,7 @@ int nxagentSynchronizeRegion(DrawablePtr pDrawable, RegionPtr pRegion, unsigned
               #endif
             }
 
-            if (cmpData != NULL)
-            {
-              free(cmpData);
-            }
+            free(cmpData);
           }
         }
         else
@@ -1066,10 +1057,7 @@ nxagentSynchronizeRegionFree:
     nxagentFreeRegion(pDrawable, clipRegion);
   }
 
-  if (data != NULL)
-  {
-    free(data);
-  }
+  free(data);
 
   RegionUninit(&exposeRegion);
 
diff --git a/nx-X11/programs/Xserver/hw/nxagent/Font.c b/nx-X11/programs/Xserver/hw/nxagent/Font.c
index f9c682765..3b35a8bff 100644
--- a/nx-X11/programs/Xserver/hw/nxagent/Font.c
+++ b/nx-X11/programs/Xserver/hw/nxagent/Font.c
@@ -841,10 +841,7 @@ static XFontStruct *nxagentLoadBestQueryFont(Display* dpy, char *fontName, FontP
 
       for (j = 0; j < numSearchFields; j++)
       {
-        if (searchFields[j] != NULL)
-        {
-          free(searchFields[j]);
-        }
+        free(searchFields[j]);
       }
     }
   }
@@ -863,10 +860,7 @@ static XFontStruct *nxagentLoadBestQueryFont(Display* dpy, char *fontName, FontP
 
   for (j = 0; j < numFontFields; j++)
   {
-    if (fontNameFields[j] != NULL)
-    {
-      free(fontNameFields[j]);
-    }
+    free(fontNameFields[j]);
   }
 
   return fontStruct;
@@ -1260,17 +1254,11 @@ static void nxagentFailedFontReconnect(FontPtr pFont, XID param1, void * param2)
 
 static void nxagentFreeFailedToReconnectFonts()
 {
-  if (nxagentFailedToReconnectFonts.font != NULL)
-  {
-    free(nxagentFailedToReconnectFonts.font);
-    nxagentFailedToReconnectFonts.font = NULL;
-  }
+  free(nxagentFailedToReconnectFonts.font);
+  nxagentFailedToReconnectFonts.font = NULL;
 
-  if (nxagentFailedToReconnectFonts.id != NULL)
-  {
-    free(nxagentFailedToReconnectFonts.id);
-    nxagentFailedToReconnectFonts.id = NULL;
-  }
+  free(nxagentFailedToReconnectFonts.id);
+  nxagentFailedToReconnectFonts.id = NULL;
 
   nxagentFailedToReconnectFonts.size = 0;
   nxagentFailedToReconnectFonts.index = 0;
@@ -1706,10 +1694,7 @@ int nxagentFreeFont(XFontStruct *fs)
     #endif
   }
 
-  if (fs -> properties)
-  {
-    free (fs->properties);
-  }
+  free (fs->properties);
 
   XFree(fs);
 
diff --git a/nx-X11/programs/Xserver/hw/nxagent/GC.c b/nx-X11/programs/Xserver/hw/nxagent/GC.c
index abe66602a..b6bff4cf2 100644
--- a/nx-X11/programs/Xserver/hw/nxagent/GC.c
+++ b/nx-X11/programs/Xserver/hw/nxagent/GC.c
@@ -924,10 +924,7 @@ static void nxagentRestoreGCRec(struct nxagentGCRec *t)
               (void*)t, (void*)t -> gc);
   #endif
 
-  if (nxagentGC(t -> pGC))
-  {
-    free(nxagentGC(t -> pGC));
-  }
+  free(nxagentGC(t -> pGC));
 
   nxagentGC(t -> pGC) = t -> gc;
 
diff --git a/nx-X11/programs/Xserver/hw/nxagent/GCOps.c b/nx-X11/programs/Xserver/hw/nxagent/GCOps.c
index 1bca067fc..beb9ef05f 100644
--- a/nx-X11/programs/Xserver/hw/nxagent/GCOps.c
+++ b/nx-X11/programs/Xserver/hw/nxagent/GCOps.c
@@ -1545,10 +1545,7 @@ void nxagentFillPolygon(DrawablePtr pDrawable, GCPtr pGC, int shape,
     RESET_GC_TRAP();
   }
 
-  if (newPoints != NULL)
-  {
-    free(newPoints);
-  }
+  free(newPoints);
 }
 
 void nxagentPolyFillRect(DrawablePtr pDrawable, GCPtr pGC,
diff --git a/nx-X11/programs/Xserver/hw/nxagent/Image.c b/nx-X11/programs/Xserver/hw/nxagent/Image.c
index 590f0b249..978272f42 100644
--- a/nx-X11/programs/Xserver/hw/nxagent/Image.c
+++ b/nx-X11/programs/Xserver/hw/nxagent/Image.c
@@ -1567,10 +1567,7 @@ nxagentPutSubImageEnd:
               nxagentImageStatistics.totalEncoded, nxagentImageStatistics.totalAdded);
   #endif
 
-  if (packedChecksum != NULL)
-  {
-    free(packedChecksum);
-  }
+  free(packedChecksum);
 
   if (packedImage != NULL)
   {
@@ -1787,11 +1784,7 @@ int nxagentScaleImage(int x, int y, unsigned xRatio, unsigned yRatio,
     }
   }
 
-  if (image -> obdata != NULL)
-  {
-    free((char *) image -> obdata);
-  }
-
+  free((char *) image -> obdata);
   free((char *) image);
 
   *pImage = newImage;
diff --git a/nx-X11/programs/Xserver/hw/nxagent/Pixmap.c b/nx-X11/programs/Xserver/hw/nxagent/Pixmap.c
index be5408d13..853621709 100644
--- a/nx-X11/programs/Xserver/hw/nxagent/Pixmap.c
+++ b/nx-X11/programs/Xserver/hw/nxagent/Pixmap.c
@@ -1172,10 +1172,7 @@ Bool nxagentCheckPixmapIntegrity(PixmapPtr pPixmap)
       XDestroyImage(image);
     }
 
-    if (data != NULL)
-    {
-      free(data);
-    }
+    free(data);
   }
   else
   {
@@ -1421,10 +1418,7 @@ FIXME: If the pixmap has a different depth from the window, the
     fprintf(stderr, "nxagentPixmapOnShadowDisplay: XCreateImage failed.\n");
     #endif
 
-    if (data != NULL)
-    {
-      free(data);
-    }
+    free(data);
 
     return False;
   }
@@ -1583,10 +1577,7 @@ Bool nxagentFbOnShadowDisplay()
     fprintf(stderr, "nxagentFbOnShadowDisplay: XCreateImage failed.\n");
     #endif
 
-    if (data)
-    {
-      free(data);
-    }
+    free(data);
 
     return False;
   }
diff --git a/nx-X11/programs/Xserver/hw/nxagent/Reconnect.c b/nx-X11/programs/Xserver/hw/nxagent/Reconnect.c
index cae0a397b..cafa219ec 100644
--- a/nx-X11/programs/Xserver/hw/nxagent/Reconnect.c
+++ b/nx-X11/programs/Xserver/hw/nxagent/Reconnect.c
@@ -610,12 +610,8 @@ Bool nxagentReconnectSession(void)
 
   nxagentXkbState.Initialized = 0;
 
-  if (nxagentOldKeyboard != NULL)
-  {
-    free(nxagentOldKeyboard);
-
-    nxagentOldKeyboard = NULL;
-  }
+  free(nxagentOldKeyboard);
+  nxagentOldKeyboard = NULL;
 
   nxagentInitPointerMap();
 
@@ -739,12 +735,8 @@ nxagentReconnectError:
     nxagentDisconnectDisplay();
   }
 
-  if (nxagentOldKeyboard != NULL)
-  {
-    free(nxagentOldKeyboard);
-
-    nxagentOldKeyboard = NULL;
-  }
+  free(nxagentOldKeyboard);
+  nxagentOldKeyboard = NULL;
 
   return 0;
 }
diff --git a/nx-X11/programs/Xserver/hw/nxagent/Screen.c b/nx-X11/programs/Xserver/hw/nxagent/Screen.c
index fb4ab9b19..90ebe9829 100644
--- a/nx-X11/programs/Xserver/hw/nxagent/Screen.c
+++ b/nx-X11/programs/Xserver/hw/nxagent/Screen.c
@@ -3079,10 +3079,7 @@ int nxagentShadowPoll(PixmapPtr nxagentShadowPixmapPtr, GCPtr nxagentShadowGCPtr
 
       length = nxagentImageLength(width, height, ZPixmap, 0, nxagentMasterDepth);
 
-      if (tBuffer)
-      {
-        free(tBuffer);
-      }
+      free(tBuffer);
 
       tBuffer = malloc(length);
 
@@ -3139,10 +3136,7 @@ int nxagentShadowPoll(PixmapPtr nxagentShadowPixmapPtr, GCPtr nxagentShadowGCPtr
       RegionUnion(&nxagentShadowUpdateRegion, &nxagentShadowUpdateRegion, &updateRegion);
     }
 
-    if (tBuffer)
-    {
-      free(tBuffer);
-    }
+    free(tBuffer);
 
     RegionUninit(&updateRegion);
   }
@@ -3360,10 +3354,7 @@ void nxagentShadowAdaptDepth(unsigned int width, unsigned int height,
   cBuffer = (unsigned char *) *buffer;
   *buffer = (char *) icBuffer;
 
-  if (cBuffer != NULL)
-  {
-    free(cBuffer);
-  }
+  free(cBuffer);
 }
 
 #ifdef NXAGENT_ARTSD
@@ -3826,9 +3817,8 @@ int nxagentAdjustRandRXinerama(ScreenPtr pScreen)
       #endif
       number = 1;
 
-      if (screeninfo) {
-	free(screeninfo);
-      }
+      free(screeninfo);
+
       if (!(screeninfo = malloc(sizeof(XineramaScreenInfo)))) {
 	return FALSE;
       }
@@ -4111,10 +4101,8 @@ int nxagentAdjustRandRXinerama(ScreenPtr pScreen)
     }
 
     /* release allocated memory */
-    if (screeninfo) {
-      free(screeninfo);
-      screeninfo = NULL;
-    }
+    free(screeninfo);
+    screeninfo = NULL;
 
 #ifdef DEBUG
     for (i = 0; i < pScrPriv->numCrtcs; i++) {
@@ -4587,10 +4575,7 @@ FIXME
     fprintf(stderr, "nxagentShowPixmap: XGetImage failed.\n");
     #endif
 
-    if (data)
-    {
-      free(data);
-    }
+    free(data);
 
     return;
   }
@@ -4623,10 +4608,7 @@ FIXME
     XDestroyImage(image);
   }
 
-  if (data != NULL)
-  {
-    free(data);
-  }
+  free(data);
 
 /*
 FIXME
@@ -4678,10 +4660,7 @@ void nxagentFbRestoreArea(PixmapPtr pPixmap, WindowPtr pWin, int xSrc, int ySrc,
     fprintf(stderr, "nxagentFbRestoreArea: XGetImage failed.\n");
     #endif
 
-    if (data)
-    {
-      free(data);
-    }
+    free(data);
 
     return;
   }
@@ -4741,10 +4720,7 @@ FIXME
 
 /*
 FIXME
-  if (data)
-  {
-    free(data);
-  }
+  free(data);
 */
 }
 
diff --git a/nx-X11/programs/Xserver/hw/nxagent/Window.c b/nx-X11/programs/Xserver/hw/nxagent/Window.c
index d58a2516d..2fa6bc136 100644
--- a/nx-X11/programs/Xserver/hw/nxagent/Window.c
+++ b/nx-X11/programs/Xserver/hw/nxagent/Window.c
@@ -3151,12 +3151,7 @@ FIXME: Do we need to set save unders attribute here?
                               &hints);
 
       #ifdef _XSERVER64
-
-      if (data64 != NULL)
-      {
-        free(data64);
-      }
-
+      free(data64);
       #endif
     }
   }
@@ -3404,10 +3399,7 @@ Bool nxagentCheckWindowIntegrity(WindowPtr pWin)
        XDestroyImage(image);
      }
 
-     if (data)
-     {
-       free(data);
-     }
+     free(data);
   }
   else
   {
@@ -3947,11 +3939,8 @@ int nxagentEmptyBSPixmapList()
 
   for (i = 0; i < BSPIXMAPLIMIT; i++)
   {
-    if (nxagentBSPixmapList[i] != NULL)
-    {
-      free(nxagentBSPixmapList[i]);
-      nxagentBSPixmapList[i] = NULL;
-    }
+    free(nxagentBSPixmapList[i]);
+    nxagentBSPixmapList[i] = NULL;
   }
 
   return 1;