[jimtabor] 72605: [Win32k] - Fix a crash while running modified stress test with explorer. See CORE-11913.

Author: jimtabor
Date: Wed Sep  7 06:33:44 2016
New Revision: 72605

URL: http://svn.reactos.org/svn/reactos?rev=72605&view=rev
Log:
[Win32k]
- Fix a crash while running modified stress test with explorer. See CORE-11913.

Modified:
    trunk/reactos/win32ss/user/ntuser/menu.c

Modified: trunk/reactos/win32ss/user/ntuser/menu.c
URL: http://svn.reactos.org/svn/reactos/trunk/reactos/win32ss/user/ntuser/menu.c?...
==============================================================================
--- trunk/reactos/win32ss/user/ntuser/menu.c	[iso-8859-1] (original)
+++ trunk/reactos/win32ss/user/ntuser/menu.c	[iso-8859-1] Wed Sep  7 06:33:44 2016
@@ -4137,9 +4137,12 @@
            if (mt.TopMenu->fFlags & MNF_POPUP)
            {
               PWND pwndTM = ValidateHwndNoErr(mt.TopMenu->hWnd);
-              IntNotifyWinEvent(EVENT_SYSTEM_MENUPOPUPEND, pwndTM, OBJID_CLIENT, CHILDID_SELF, 0);
-
-              co_UserDestroyWindow(pwndTM);
+              if (pwndTM)
+              {
+                 IntNotifyWinEvent(EVENT_SYSTEM_MENUPOPUPEND, pwndTM, OBJID_CLIENT, CHILDID_SELF, 0);
+
+                 co_UserDestroyWindow(pwndTM);
+              }
               mt.TopMenu->hWnd = NULL;

if (!(wFlags & TPM_NONOTIFY))