From cc973b0cdc9168dbcfdfd87d5e2b3d5d71b38fa1 Mon Sep 17 00:00:00 2001
From: Alexandre Julliard <julliard@winehq.org>
Date: Tue, 1 Dec 2009 14:38:21 +0100
Subject: [PATCH] gdi32: Avoid calling get_dc_ptr on a null handle.

---
 dlls/gdi32/dc.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/dlls/gdi32/dc.c b/dlls/gdi32/dc.c
index c4c5a1325f8..2aeeec234a2 100644
--- a/dlls/gdi32/dc.c
+++ b/dlls/gdi32/dc.c
@@ -750,8 +750,9 @@ HDC WINAPI CreateCompatibleDC( HDC hdc )
 
     GDI_CheckNotLock();
 
-    if ((origDC = get_dc_ptr( hdc )))
+    if (hdc)
     {
+        if (!(origDC = get_dc_ptr( hdc ))) return 0;
         if (GetObjectType( hdc ) == OBJ_DC)
         {
             funcs = origDC->funcs;
@@ -760,7 +761,6 @@ HDC WINAPI CreateCompatibleDC( HDC hdc )
         release_dc_ptr( origDC );
         if (funcs) funcs = DRIVER_get_driver( funcs );
     }
-    else if (hdc) return 0;
 
     if (!funcs && !(funcs = DRIVER_load_driver( displayW ))) return 0;