8022247: java/awt/EventDispatchThread/LoopRobustness/LoopRobustness throws NPE

Reviewed-by: art

test/java/awt/EventDispatchThread/LoopRobustness/LoopRobustness.java

 /*
- * Copyright (c) 1998, 2010, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1998, 2013, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -49,6 +49,8 @@ public class LoopRobustness {
     public static volatile boolean otherExceptionsCaught = false;
 
     public static void main(String [] args) throws Exception {
+        SunToolkit.createNewAppContext();
+
         ThreadGroup mainThreadGroup = Thread.currentThread().getThreadGroup();
 
         long at;