From 79ada317148657b90420c48c8c7620e375afae0a Mon Sep 17 00:00:00 2001
From: Sebastian Lackner <sebastian@fds-team.de>
Date: Tue, 9 Feb 2016 09:16:49 +0100
Subject: [PATCH] server: Fix an invalid memory access in subtract_overlapping
 (Valgrind).

Signed-off-by: Sebastian Lackner <sebastian@fds-team.de>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>
---
 server/region.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/server/region.c b/server/region.c
index 464c5adb275..33e2a54fab9 100644
--- a/server/region.c
+++ b/server/region.c
@@ -469,7 +469,8 @@ static int subtract_overlapping( struct region *pReg,
                 rect->bottom = bottom;
             }
             r1++;
-            left = r1->left;
+            if (r1 != r1End)
+                left = r1->left;
         }
     }