From 715b146a8b692d485d877dfc2bf5548ec1a15f5b Mon Sep 17 00:00:00 2001
From: Stefan Csomor <csomor@advancedconcepts.ch>
Date: Wed, 13 Jun 2007 12:43:36 +0000
Subject: [PATCH] fixing 1736298

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/branches/WX_2_8_BRANCH@46441 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
---
 src/mac/carbon/renderer.cpp | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/src/mac/carbon/renderer.cpp b/src/mac/carbon/renderer.cpp
index 37cc0e311b..2afc7a44df 100644
--- a/src/mac/carbon/renderer.cpp
+++ b/src/mac/carbon/renderer.cpp
@@ -149,8 +149,13 @@ int wxRendererMac::DrawHeaderButton( wxWindow *win,
         CGContextTranslateCTM( cgContext, 0, bounds.bottom - bounds.top );
         CGContextScaleCTM( cgContext, 1, -1 );
 
-        HIShapeReplacePathInCGContext( HIShapeCreateWithQDRgn( (RgnHandle) dc.m_macCurrentClipRgn ), cgContext );
-        CGContextClip( cgContext );
+        HIShapeRef shape = HIShapeCreateWithQDRgn( (RgnHandle) dc.m_macCurrentClipRgn );
+        if ( shape != 0 )
+        {
+            HIShapeReplacePathInCGContext( shape , cgContext );
+            CFRelease( shape );
+            CGContextClip( cgContext );
+        }
         HIViewConvertRect( &headerRect, (HIViewRef) win->GetHandle(), (HIViewRef) win->MacGetTopLevelWindow()->GetHandle() );
 #endif