RtlLargeIntegerArithmeticShift() shouldn't return uninitialized data from the stack

reactos/lib/rtl

diff -u -r1.1 -r1.2
--- largeint.c	31 May 2004 19:29:02 -0000	1.1
+++ largeint.c	11 Dec 2004 15:23:51 -0000	1.2
@@ -1,4 +1,4 @@

-/* $Id: largeint.c,v 1.1 2004/05/31 19:29:02 gdalsnes Exp $

+/* $Id: largeint.c,v 1.2 2004/12/11 15:23:51 weiden Exp $

  *
  * COPYRIGHT:       See COPYING in the top level directory
  * PROJECT:         ReactOS kernel

@@ -254,7 +254,7 @@

    else
    {
       /* copy the sign bit */

-      RC.u.HighPart |= (LargeInteger.u.HighPart & 0x80000000);

+      RC.u.HighPart = (LargeInteger.u.HighPart & 0x80000000);

       RC.u.LowPart = LargeInteger.u.HighPart >> Shift;
    }