From 434059d517d786078c8cf528fd8bea70aa62fb73 Mon Sep 17 00:00:00 2001
From: David Capello <davidcapello@gmail.com>
Date: Mon, 24 Aug 2015 12:48:27 -0300
Subject: [PATCH] Don't access to the first item in DirectDraw surfaces list
 outside the gfx critical region

This could be a fix for a long-standing crash in
gfx_directx_restore_surface() accesing to an invalid
memory address.
---
 src/allegro/src/win/wddbmpl.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/allegro/src/win/wddbmpl.c b/src/allegro/src/win/wddbmpl.c
index 2403fe035..2a23bd05d 100644
--- a/src/allegro/src/win/wddbmpl.c
+++ b/src/allegro/src/win/wddbmpl.c
@@ -113,10 +113,11 @@ void unregister_all_ddraw_surfaces(void)
  */
 int restore_all_ddraw_surfaces(void)
 {
-   DDRAW_SURFACE *item = ddraw_surface_list;
+   DDRAW_SURFACE *item;
 
    _enter_gfx_critical();
 
+   item = ddraw_surface_list;
    while (item) {
       if (gfx_directx_restore_surface(item) != 0) {
          _exit_gfx_critical();