Followup to 287290 on potential static buffer overruns, and fix GTK2 port too. b=287290 r+sr=brendan

widget/src/gtk/nsWindow.cpp

@@ -1231,9 +1231,7 @@ GdkCursor *nsWindow::GtkCreateCursor(nsCursor aCursorType)
   }
 
   /* if by now we dont have a xcursor, this means we have to make a custom one */
-  if (!gdkcursor) {
-    NS_ASSERTION(newType != 0xff, "Unknown cursor type and no standard cursor");
-
+  if (newType != 0xff) {
     gdk_color_parse("#000000", &fg);
     gdk_color_parse("#ffffff", &bg);
 

widget/src/gtk2/nsWindow.cpp

@@ -3529,15 +3529,13 @@ get_gtk_cursor(nsCursor aCursor)
         break;
     default:
         NS_ASSERTION(aCursor, "Invalid cursor type");
+        gdkcursor = gdk_cursor_new(GDK_LEFT_PTR);
         break;
     }
 
     // if by now we dont have a xcursor, this means we have to make a
     // custom one
-    if (!gdkcursor) {
-        NS_ASSERTION(newType != 0xff,
-                     "Unknown cursor type and no standard cursor");
-
+    if (newType != 0xff) {
         gdk_color_parse("#000000", &fg);
         gdk_color_parse("#ffffff", &bg);