#216848

r=mkaply, sr=blizzard (platform specific), a=mkaply
OS/2 only - add some error checking for querying system fonts

gfx/src/os2/nsDeviceContextOS2.cpp

@@ -460,9 +460,11 @@ nsresult GetSysFontInfo(nsSystemFontID aID, nsFont* aFont)
   char *szFacename;
 
   pointSize = atoi(szFontNameSize);
-
   szFacename = strchr(szFontNameSize, '.');
-  szFacename++;
+
+  if ((pointSize == 0) || (!szFacename) || (*(szFacename++) == '\0')) {
+     return NS_ERROR_FAILURE;
+  }
 
 #ifdef OLDCODE
   PRUnichar name[FACESIZE];