From b671b1cf8f7c3dce718d81f9067e07c66f878498 Mon Sep 17 00:00:00 2001
From: Serge Gautherie <32623169+SergeGautherie@users.noreply.github.com>
Date: Sat, 2 Jul 2022 11:30:03 +0200
Subject: [PATCH] [WIN32K:ENG] EngAlphaBlend(): Release EnterLeaveSource on
 error (#4560)

Part of CORE-11156

Co-authored-by: Carlo Bramini <carlo.bramix@libero.it>
---
 win32ss/gdi/eng/alphablend.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/win32ss/gdi/eng/alphablend.c b/win32ss/gdi/eng/alphablend.c
index 869698989ba..012d8c984be 100644
--- a/win32ss/gdi/eng/alphablend.c
+++ b/win32ss/gdi/eng/alphablend.c
@@ -111,6 +111,7 @@ EngAlphaBlend(
 
     if (!IntEngEnter(&EnterLeaveDest, psoDest, &OutputRect, FALSE, &Translate, &OutputObj))
     {
+        IntEngLeave(&EnterLeaveSource);
         return FALSE;
     }
     OutputRect.left += Translate.x;