From 9937c7068b46ffafc50d0218c47f3573302f79f3 Mon Sep 17 00:00:00 2001
From: Joachim Henze <Joachim.Henze@reactos.org>
Date: Fri, 11 Dec 2020 04:07:20 +0100
Subject: [PATCH] [0.4.10][WIN32SS] Fix assert with Winamp 5.666 CORE-10774

Fixes CORE-10774 "Winamp asserts upon startup when Bentoo skin is selected"

Reference:
Alexandre Julliard : Ignore empty rectangles in ExtCreateRegion.
https://source.winehq.org/git/wine.git/commitdiff/8ac61c5a1e56d0933de8af69dbb2a1640d13e05d

fix picked from 0.4.12-dev-979-g 2f5c0ee0a9ffc6619ba35ed120e023283fdb1a88
---
 win32ss/gdi/ntgdi/region.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/win32ss/gdi/ntgdi/region.c b/win32ss/gdi/ntgdi/region.c
index 13fae9efd15..79712182c71 100644
--- a/win32ss/gdi/ntgdi/region.c
+++ b/win32ss/gdi/ntgdi/region.c
@@ -3858,7 +3858,10 @@ NtGdiExtCreateRegion(
         /* Insert the rectangles one by one */
         for(i=0; i<nCount; i++)
         {
-            REGION_UnionRectWithRgn(Region, &rects[i]);
+            if ( rects[i].left < rects[i].right && rects[i].top < rects[i].bottom )
+            {
+                REGION_UnionRectWithRgn(Region, &rects[i]);
+            }
         }
 
         if (Xform != NULL)