Bug 114255 - need to call UpdateGC() even if we already have a GC

r=pavlov,sr=jst

gfx/src/gtk/nsRenderingContextGTK.cpp

@@ -786,9 +786,8 @@ NS_IMETHODIMP nsRenderingContextGTK::CreateDrawingSurface(nsRect *aBounds,
   if (surf)
   {
     NS_ADDREF(surf);
-    if (!mGC)
-      UpdateGC();
-      rv = surf->Init(mGC, aBounds->width, aBounds->height, aSurfFlags);    
+    UpdateGC();
+    rv = surf->Init(mGC, aBounds->width, aBounds->height, aSurfFlags);    
   } else {
     rv = NS_ERROR_FAILURE;
   }