From 56cc59110a437658b8f0b6113834fd0ca157e448 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Morten=20Johan=20S=C3=B8rvig?= <morten.sorvig@digia.com>
Date: Tue, 23 Apr 2013 14:29:56 +0200
Subject: [PATCH] Don't crash on a null window pointer.

Task-number: QTBUG-30731

Change-Id: Id256b915012b43d1eb85bba62cbc1d42cfb58b34
Reviewed-by: Gabriel de Dietrich <gabriel.dedietrich@digia.com>
---
 src/plugins/platforms/cocoa/qcocoanativeinterface.mm | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/plugins/platforms/cocoa/qcocoanativeinterface.mm b/src/plugins/platforms/cocoa/qcocoanativeinterface.mm
index daceb1e8ad..64e2b619c1 100644
--- a/src/plugins/platforms/cocoa/qcocoanativeinterface.mm
+++ b/src/plugins/platforms/cocoa/qcocoanativeinterface.mm
@@ -231,6 +231,9 @@ void QCocoaNativeInterface::setWindowContentView(QPlatformWindow *window, void *
 
 void QCocoaNativeInterface::registerTouchWindow(QWindow *window,  bool enable)
 {
+    if (!window)
+        return;
+
     // Make sure the QCocoaWindow is created when enabling. Disabling might
     // happen on window destruction, don't (re)create the QCocoaWindow then.
     if (enable)