From 9d2f75b905163b508c9fc4a5b4816c2be03e100b Mon Sep 17 00:00:00 2001
From: Aleksey Bragin <aleksey@reactos.org>
Date: Thu, 13 Jul 2006 20:47:59 +0000
Subject: [PATCH] Added a check for a non-null WndProc into IntCallWndProcA/W.
 Instead of bugchecking, it shows a DPRINT1 now to inform about a bug. As a
 side effect, mIRC now works in ReactOS.

svn path=/trunk/; revision=23046
---
 reactos/dll/win32/user32/windows/message.c | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/reactos/dll/win32/user32/windows/message.c b/reactos/dll/win32/user32/windows/message.c
index f4bf39cde4d..78794293b0c 100644
--- a/reactos/dll/win32/user32/windows/message.c
+++ b/reactos/dll/win32/user32/windows/message.c
@@ -1141,6 +1141,12 @@ IntCallWindowProcW(BOOL IsAnsiProc,
   MSG UnicodeMsg;
   LRESULT Result;
 
+  if (WndProc == NULL)
+  {
+      DPRINT1("IntCallWindowsProcW() called with WndProc = NULL!\n");
+      return FALSE;
+  }
+
   if (IsAnsiProc)
     {
       UnicodeMsg.hwnd = hWnd;
@@ -1177,6 +1183,12 @@ IntCallWindowProcA(BOOL IsAnsiProc,
   MSG UnicodeMsg;
   LRESULT Result;
 
+  if (WndProc == NULL)
+  {
+      DPRINT1("IntCallWindowsProcA() called with WndProc = NULL!\n");
+      return FALSE;
+  }
+
   if (IsAnsiProc)
     {
       return WndProc(hWnd, Msg, wParam, lParam);