From db1ccf9d57f19cf01efb020b6d1967ef6084a8e3 Mon Sep 17 00:00:00 2001
From: Martin Petersson <martin.petersson@nokia.com>
Date: Thu, 10 Mar 2011 15:07:15 +0100
Subject: Mac: Center the Window title on Cocoa.

Task-number: QTBUG-13593
Reviewed-by: Richard Moe Gustavsen
---
 src/gui/kernel/qwidget_mac.mm | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/gui/kernel/qwidget_mac.mm b/src/gui/kernel/qwidget_mac.mm
index 9a5a5f1..14a90ef 100644
--- a/src/gui/kernel/qwidget_mac.mm
+++ b/src/gui/kernel/qwidget_mac.mm
@@ -3239,6 +3239,8 @@ void QWidgetPrivate::setWindowIcon_sys(bool forceReset)
             ReleaseIconRef(previousIcon);
 #else
         QMacCocoaAutoReleasePool pool;
+        if (icon.isNull())
+            return;
         NSButton *iconButton = [qt_mac_window_for(q) standardWindowButton:NSWindowDocumentIconButton];
         if (iconButton == nil) {
             QCFString string(q->windowTitle());
-- 
cgit v0.12