--- a/hotspot/src/share/vm/opto/locknode.cpp	Wed Nov 21 05:57:12 2012 -0800
+++ b/hotspot/src/share/vm/opto/locknode.cpp	Mon Nov 26 17:25:11 2012 -0800
@@ -165,7 +165,7 @@
   kill_dead_locals();
 
   // Null check; get casted pointer.
-  Node *obj = do_null_check(peek(), T_OBJECT);
+  Node* obj = null_check(peek());
   // Check for locking null object
   if (stopped()) return;