Make the debugger completely unload when the debug event listener is unregist...

test/mjsunit/debug-evaluate-recursive.js

 // Copyright 2008 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 135 matching lines @@
 // Cause a debug break event.
 debugger;
 
 // Make sure that the debug event listener vas invoked.
 assertTrue(listenerComplete);
 assertFalse(exception, "exception in listener")
 
 // Remove the debug event listener.
 Debug.setListener(null);
 
-// Add debug event listener wich uses recursive breaks.
+// Set debug event listener wich uses recursive breaks.
+Debug.setListener(listener_recurse);
 listenerComplete = false;
-Debug.setListener(listener_recurse);
+
+Debug.setBreakPoint(f, 2, 0);
 
 debugger;
 
 // Make sure that the debug event listener vas invoked.
 assertTrue(listenerComplete);
 assertFalse(exception, "exception in listener")
 assertEquals(2, break_count);