From d650c46c855d71e0729cd8cffddd1063dc2b9569 Mon Sep 17 00:00:00 2001
From: Dmitry Timoshkov <dmitry@sloboda.ru>
Date: Fri, 28 Jul 2000 20:20:03 +0000
Subject: [PATCH] Do not crash if window was not found.

---
 windows/x11drv/event.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/windows/x11drv/event.c b/windows/x11drv/event.c
index 9377bb30303..e8511bec1ab 100644
--- a/windows/x11drv/event.c
+++ b/windows/x11drv/event.c
@@ -724,7 +724,7 @@ static void EVENT_ButtonPress( HWND hWnd, XButtonEvent *event )
   WIN_ReleaseWndPtr(pWnd);
 
   if (buttonNum >= NB_BUTTONS) return;
-  
+
   /*
    * Get the compatible keystate
    */
@@ -1857,7 +1857,7 @@ void EVENT_MapNotify( HWND hWnd, XMapEvent *event )
 void EVENT_UnmapNotify( HWND hWnd, XUnmapEvent *event )
 {
   WND *pWnd = WIN_FindWndPtr(hWnd);
-  if (pWnd->flags & WIN_MANAGED)
+  if (pWnd && (pWnd->flags & WIN_MANAGED))
   {
       EndMenu();
       if( pWnd->dwStyle & WS_VISIBLE )