Fix memory leak, thanks to Thomas for spotting this

reactos/subsys/win32k/ntuser

diff -u -r1.55 -r1.56
--- message.c	7 Apr 2004 17:52:32 -0000	1.55
+++ message.c	7 Apr 2004 21:12:40 -0000	1.56
@@ -16,7 +16,7 @@

  *  along with this program; if not, write to the Free Software
  *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  */

-/* $Id: message.c,v 1.55 2004/04/07 17:52:32 gvg Exp $

+/* $Id: message.c,v 1.56 2004/04/07 21:12:40 gvg Exp $

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

@@ -862,6 +862,8 @@

       IntSendMessageTimeoutSingle(*Child, Msg, wParam, lParam, uFlags, uTimeout, uResult);
     }
 

+  ExFreePool(Children);
+

   return (LRESULT) TRUE;
 }