Uninitialized variables

dom/src/base/nsGlobalWindow.cpp

@@ -1346,7 +1346,7 @@ GlobalWindowImpl::Open(JSContext *cx,
     }
 
     nsAutoString mURL, mEmpty;
-    nsIURL* mDocURL;
+    nsIURL* mDocURL = 0;
     nsIDocument* mDoc;
 
     mURL.SetString(JS_GetStringChars(mJSStrURL));

expat/xmltok/xmltok_impl.c

@@ -1306,7 +1306,7 @@ int PREFIX(getAtts)(const ENCODING *enc, const char *ptr,
 {
   enum { other, inName, inValue } state = inName;
   int nAtts = 0;
-  int open;
+  int open = 0;
 
   for (ptr += MINBPC;; ptr += MINBPC) {
     switch (BYTE_TYPE(enc, ptr)) {

gfx/src/gtk/nsFontMetricsGTK.cpp

@@ -246,7 +246,7 @@ char * nsFontMetricsGTK::PickAppropriateSize(char **names, XFontStruct *fonts, i
 //  XXX FIX ME
   PRInt32     desiredpix = NSToIntRound(app2dev * desired);
   XFontStruct *curfont;
-  PRInt32     closestmin = -1, minidx;
+  PRInt32     closestmin = -1, minidx = 0;
 
   //first try an exact or closest smaller match...
   

modules/libimg/src/scale.cpp

@@ -691,7 +691,7 @@ il_emit_row(
     IL_Pixmap *mask = ic->mask;
     NI_PixmapHeader *src_header = ic->src_header;
     NI_PixmapHeader *img_header = &image->header;
-    NI_PixmapHeader *mask_header;
+    NI_PixmapHeader *mask_header = 0;
     NI_ColorSpace *src_color_space = src_header->color_space;
     NI_ColorSpace *img_color_space = img_header->color_space;
 	uint8 XP_HUGE *out;

network/module/nsStubContext.cpp

@@ -524,7 +524,7 @@ void free_stub_context(MWContext *window_id)
 extern "C" MWContext * XP_FindContextOfType (MWContext * context, 
                                              MWContextType type)
 {
-    MWContext *window_id;
+    MWContext *window_id = 0;
 
     /*
      * Return the context that was passed in if it is the correct type

parser/expat/lib/xmltok_impl.c

@@ -1306,7 +1306,7 @@ int PREFIX(getAtts)(const ENCODING *enc, const char *ptr,
 {
   enum { other, inName, inValue } state = inName;
   int nAtts = 0;
-  int open;
+  int open = 0;
 
   for (ptr += MINBPC;; ptr += MINBPC) {
     switch (BYTE_TYPE(enc, ptr)) {