src/java.desktop/unix/classes/sun/awt/X11/XEmbedClientHelper.java

@@ -180,11 +180,11 @@
         if (active) {
             // unregister accelerators, etc. for old parent
             embedded.notifyStopped();
             // check if newParent is a root window
             X11GraphicsConfig gc = (X11GraphicsConfig)embedded.getGraphicsConfiguration();
-            X11GraphicsDevice gd = (X11GraphicsDevice)gc.getDevice();
+            X11GraphicsDevice gd = gc.getDevice();
             if ((newParent == XlibUtil.getRootWindow(gd.getScreen())) ||
                 (newParent == XToolkit.getDefaultRootWindow()))
             {
                 // reparenting to root means XEmbed termination
                 active = false;