Bug 968193 - flash-plugin freezes when window allocation size is 0x0. r=karlt

dom/plugins/base/nsNPAPIPluginInstance.cpp

@@ -562,7 +562,7 @@ nsresult nsNPAPIPluginInstance::SetWindow(NPWindow* window)
   if (!window || RUNNING != mRunning)
     return NS_OK;
 
-#if (MOZ_WIDGET_GTK == 2)
+#if MOZ_WIDGET_GTK
   // bug 108347, flash plugin on linux doesn't like window->width <=
   // 0, but Java needs wants this call.
   if (!nsPluginHost::IsJavaMIMEType(mMIMEType) && window->type == NPWindowTypeWindow &&