Fix issues with commit r3839...

test/mjsunit/setter-on-constructor-prototype.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 90 matching lines @@
   }
   
   for (var i = 0; i < 10; i++) {
     var d = new D();
     assertEquals(23, d.x);
     assertEquals("undefined", typeof d.y);
   }
 }
 
 RunTest(false);
-//RunTest(true);
+RunTest(true);