[weiden] 20796: fixed uninitialized variable warning

fixed uninitialized variable warning
Modified: trunk/reactos/ntoskrnl/ke/usercall.c
  _____

Modified: trunk/reactos/ntoskrnl/ke/usercall.c
--- trunk/reactos/ntoskrnl/ke/usercall.c	2006-01-12 00:11:14 UTC
(rev 20795)
+++ trunk/reactos/ntoskrnl/ke/usercall.c	2006-01-12 00:13:45 UTC
(rev 20796)
@@ -40,7 +40,7 @@

{
     ULONG_PTR NewStack, OldStack;
     PULONG UserEsp;
-    NTSTATUS CallbackStatus;
+    NTSTATUS CallbackStatus = STATUS_SUCCESS;
     PEXCEPTION_REGISTRATION_RECORD ExceptionList;
     DPRINT("KeUserModeCallback(RoutineIndex %d, Argument %X,
ArgumentLength %d)\n",
             RoutineIndex, Argument, ArgumentLength);