don't probe ObjectAttributes if NULL

Modified: trunk/reactos/ntoskrnl/ob/object.c

--- trunk/reactos/ntoskrnl/ob/object.c	2005-01-21 22:25:54 UTC (rev 13197)
+++ trunk/reactos/ntoskrnl/ob/object.c	2005-01-21 23:01:33 UTC (rev 13198)
@@ -601,7 +601,7 @@

 
   ASSERT_IRQL(APC_LEVEL);
   

-  if(AccessMode == UserMode)

+  if(AccessMode == UserMode && ObjectAttributes != NULL)

   {
     Status = STATUS_SUCCESS;
     _SEH_TRY