rm redundant null checks

remove more redundant NULL checks
note that _XkbFree() is really Xfree()

Signed-off-by: Harms <wharms@bfs,de>
Reviewed-by: Rémi Cardona <remi@gentoo.org>
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Backported-to-NX-by: Ulrich Sibiller <uli42@gmx.de>

7 files changed, 52 insertions, 70 deletions

diff --git a/nx-X11/lib/X11/GetHints.c b/nx-X11/lib/X11/GetHints.c
index fae61e912..7bfd35358 100644
--- a/nx-X11/lib/X11/GetHints.c
+++ b/nx-X11/lib/X11/GetHints.c
@@ -258,7 +258,7 @@ Status XGetCommand (
 	return (0);
     }
 
-    if (tp.value) Xfree (tp.value);
+    Xfree (tp.value);
     *argvp = argv;
     *argcp = argc;
     return 1;
diff --git a/nx-X11/lib/X11/XKBAlloc.c b/nx-X11/lib/X11/XKBAlloc.c
index a089ff46d..9c3430c1a 100644
--- a/nx-X11/lib/X11/XKBAlloc.c
+++ b/nx-X11/lib/X11/XKBAlloc.c
@@ -442,8 +442,7 @@ XkbAllocDeviceInfo(unsigned deviceSpec, unsigned nButtons, unsigned szLeds)
             devi->sz_leds = szLeds;
             devi->leds = _XkbTypedCalloc(szLeds, XkbDeviceLedInfoRec);
             if (!devi->leds) {
-                if (devi->btn_acts)
-                    _XkbFree(devi->btn_acts);
+                _XkbFree(devi->btn_acts);
                 _XkbFree(devi);
                 return NULL;
             }
diff --git a/nx-X11/lib/X11/XKBExtDev.c b/nx-X11/lib/X11/XKBExtDev.c
index 25c76ab11..183647fc6 100644
--- a/nx-X11/lib/X11/XKBExtDev.c
+++ b/nx-X11/lib/X11/XKBExtDev.c
@@ -194,8 +194,8 @@ _XkbReadGetDeviceInfoReply(Display *dpy,
         act = &devi->btn_acts[rep->firstBtnWanted];
         bzero((char *) act, (rep->nBtnsWanted * sizeof(XkbAction)));
     }
-    if (devi->name != NULL)
-        _XkbFree(devi->name);
+
+    _XkbFree(devi->name);
     if (!_XkbGetReadBufferCountedString(&buf, &devi->name))
         goto BAILOUT;
     if (rep->nBtnsRtrn > 0) {
@@ -475,7 +475,7 @@ _InitLedStuff(SetLedStuff *stuff, unsigned wanted, XkbDeviceInfoPtr devi)
 static void
 _FreeLedStuff(SetLedStuff * stuff)
 {
-    if ((stuff->num_info > 0) && (stuff->info != NULL))
+    if (stuff->num_info > 0)
         _XkbFree(stuff->info);
     bzero(stuff, sizeof(SetLedStuff));
     return;
diff --git a/nx-X11/lib/X11/XKBGeom.c b/nx-X11/lib/X11/XKBGeom.c
index 0145da8c1..f57fe7cf6 100644
--- a/nx-X11/lib/X11/XKBGeom.c
+++ b/nx-X11/lib/X11/XKBGeom.c
@@ -269,10 +269,9 @@ _XkbReadGeomProperties(XkbReadBufferPtr buf,
             ok = _XkbGetReadBufferCountedString(buf, &name) && ok;
             ok = _XkbGetReadBufferCountedString(buf, &value) && ok;
             ok = ok && (XkbAddGeomProperty(geom, name, value) != NULL);
-            if (name)
-                _XkbFree(name);
-            if (value)
-                _XkbFree(value);
+
+	    _XkbFree(name);
+	    _XkbFree(value);
         }
         if (ok)
             rtrn = Success;
@@ -322,8 +321,8 @@ _XkbReadGeomColors(XkbReadBufferPtr buf,
                 rtrn = BadLength;
             else if (XkbAddGeomColor(geom, spec, geom->num_colors) == NULL)
                 rtrn = BadAlloc;
-            if (spec)
-                _XkbFree(spec);
+
+            _XkbFree(spec);
             if (rtrn != Success)
                 return rtrn;
         }
diff --git a/nx-X11/lib/X11/XKBMAlloc.c b/nx-X11/lib/X11/XKBMAlloc.c
index d1f232619..5e77670af 100644
--- a/nx-X11/lib/X11/XKBMAlloc.c
+++ b/nx-X11/lib/X11/XKBMAlloc.c
@@ -226,18 +226,16 @@ XkbCopyKeyType(XkbKeyTypePtr from, XkbKeyTypePtr into)
 {
     if ((!from) || (!into))
         return BadMatch;
-    if (into->map) {
-        _XkbFree(into->map);
-        into->map = NULL;
-    }
-    if (into->preserve) {
-        _XkbFree(into->preserve);
-        into->preserve = NULL;
-    }
-    if (into->level_names) {
-        _XkbFree(into->level_names);
-        into->level_names = NULL;
-    }
+
+    _XkbFree(into->map);
+    into->map = NULL;
+
+    _XkbFree(into->preserve);
+    into->preserve = NULL;
+
+    _XkbFree(into->level_names);
+    into->level_names = NULL;
+
     *into = *from;
     if ((from->map) && (into->map_count > 0)) {
         into->map = _XkbTypedCalloc(into->map_count, XkbKTMapEntryRec);
@@ -385,11 +383,9 @@ XkbResizeKeyType(XkbDescPtr xkb,
     }
     type = &xkb->map->types[type_ndx];
     if (map_count == 0) {
-        if (type->map != NULL)
-            _XkbFree(type->map);
+        _XkbFree(type->map);
         type->map = NULL;
-        if (type->preserve != NULL)
-            _XkbFree(type->preserve);
+        _XkbFree(type->preserve);
         type->preserve = NULL;
         type->map_count = 0;
     }
@@ -400,8 +396,7 @@ XkbResizeKeyType(XkbDescPtr xkb,
             type->map =
                 _XkbTypedRealloc(type->map, map_count, XkbKTMapEntryRec);
         if (!type->map) {
-            if (prev_map)
-                _XkbFree(prev_map);
+            _XkbFree(prev_map);
             return BadAlloc;
         }
         if (want_preserve) {
@@ -412,12 +407,11 @@ XkbResizeKeyType(XkbDescPtr xkb,
                                                   XkbModsRec);
             }
             if (!type->preserve) {
-                if (prev_preserve)
-                    _XkbFree(prev_preserve);
+                _XkbFree(prev_preserve);
                 return BadAlloc;
             }
         }
-        else if (type->preserve != NULL) {
+        else {
             _XkbFree(type->preserve);
             type->preserve = NULL;
         }
@@ -430,8 +424,7 @@ XkbResizeKeyType(XkbDescPtr xkb,
         type->level_names =
             _XkbTypedRealloc(type->level_names, new_num_lvls, Atom);
         if (!type->level_names) {
-            if (prev_level_names)
-                _XkbFree(prev_level_names);
+            _XkbFree(prev_level_names);
             return BadAlloc;
         }
     }
@@ -948,19 +941,16 @@ XkbFreeClientMap(XkbDescPtr xkb, unsigned what, Bool freeMap)
                 XkbKeyTypePtr type;
 
                 for (i = 0, type = map->types; i < map->num_types; i++, type++) {
-                    if (type->map != NULL) {
-                        _XkbFree(type->map);
-                        type->map = NULL;
-                    }
-                    if (type->preserve != NULL) {
-                        _XkbFree(type->preserve);
-                        type->preserve = NULL;
-                    }
+                    _XkbFree(type->map);
+                    type->map = NULL;
+
+                    _XkbFree(type->preserve);
+                    type->preserve = NULL;
+
                     type->map_count = 0;
-                    if (type->level_names != NULL) {
-                        _XkbFree(type->level_names);
-                        type->level_names = NULL;
-                    }
+
+                    _XkbFree(type->level_names);
+                    type->level_names = NULL;
                 }
             }
             _XkbFree(map->types);
@@ -969,17 +959,14 @@ XkbFreeClientMap(XkbDescPtr xkb, unsigned what, Bool freeMap)
         }
     }
     if (what & XkbKeySymsMask) {
-        if (map->key_sym_map != NULL) {
-            _XkbFree(map->key_sym_map);
-            map->key_sym_map = NULL;
-        }
-        if (map->syms != NULL) {
-            _XkbFree(map->syms);
-            map->size_syms = map->num_syms = 0;
-            map->syms = NULL;
-        }
+        _XkbFree(map->key_sym_map);
+        map->key_sym_map = NULL;
+
+        _XkbFree(map->syms);
+        map->size_syms = map->num_syms = 0;
+        map->syms = NULL;
     }
-    if ((what & XkbModifierMapMask) && (map->modmap != NULL)) {
+    if (what & XkbModifierMapMask) {
         _XkbFree(map->modmap);
         map->modmap = NULL;
     }
@@ -1000,26 +987,23 @@ XkbFreeServerMap(XkbDescPtr xkb, unsigned what, Bool freeMap)
     if (freeMap)
         what = XkbAllServerInfoMask;
     map = xkb->server;
-    if ((what & XkbExplicitComponentsMask) && (map->explicit != NULL)) {
+    if (what & XkbExplicitComponentsMask) {
         _XkbFree(map->explicit);
         map->explicit = NULL;
     }
     if (what & XkbKeyActionsMask) {
-        if (map->key_acts != NULL) {
-            _XkbFree(map->key_acts);
+           _XkbFree(map->key_acts);
             map->key_acts = NULL;
-        }
-        if (map->acts != NULL) {
-            _XkbFree(map->acts);
+
+           _XkbFree(map->acts);
             map->num_acts = map->size_acts = 0;
             map->acts = NULL;
-        }
     }
-    if ((what & XkbKeyBehaviorsMask) && (map->behaviors != NULL)) {
+    if (what & XkbKeyBehaviorsMask) {
         _XkbFree(map->behaviors);
         map->behaviors = NULL;
     }
-    if ((what & XkbVirtualModMapMask) && (map->vmodmap != NULL)) {
+    if (what & XkbVirtualModMapMask)  {
         _XkbFree(map->vmodmap);
         map->vmodmap = NULL;
     }
diff --git a/nx-X11/lib/X11/XKBNames.c b/nx-X11/lib/X11/XKBNames.c
index f5a6ed1fa..44f71cedf 100644
--- a/nx-X11/lib/X11/XKBNames.c
+++ b/nx-X11/lib/X11/XKBNames.c
@@ -133,8 +133,8 @@ _XkbReadGetNamesReply(Display *dpy,
                 if ((nLevels[i] > 0) && (nLevels[i] != type->num_levels)) {
                     goto BAILOUT;
                 }
-                if (type->level_names != NULL)
-                    Xfree(type->level_names);
+
+                Xfree(type->level_names);
                 if (nLevels[i] == 0) {
                     type->level_names = NULL;
                     continue;
diff --git a/nx-X11/lib/X11/XKBRdBuf.c b/nx-X11/lib/X11/XKBRdBuf.c
index 60d7c7364..381f4c900 100644
--- a/nx-X11/lib/X11/XKBRdBuf.c
+++ b/nx-X11/lib/X11/XKBRdBuf.c
@@ -167,8 +167,8 @@ _XkbFreeReadBuffer(XkbReadBufferPtr buf)
         int left;
 
         left = (int) _XkbReadBufferDataLeft(buf);
-        if (buf->start != NULL)
-            Xfree(buf->start);
+
+        Xfree(buf->start);
         buf->size = 0;
         buf->start = buf->data = NULL;
         return left;