fix another mem leak.

widget/src/gtk/nsGtkEventHandler.cpp

@@ -334,8 +334,9 @@ idle_resize_cb(gpointer data)
   //          info->widget);
   info->widget->OnResize(*info->rect);
   NS_RELEASE(info->widget);
-  // FIXME free info->rect
+  delete info->rect;
   g_free(info);
+
   // this will return 0 if the list is
   // empty.  that will remove this idle timeout.
   // if it's > 1 then it will be restarted and