From b42b00a36b5b48bffcbccc9b1c7ecafa89b4e18e Mon Sep 17 00:00:00 2001
From: Olivier Goffart <ogoffart@trolltech.com>
Date: Fri, 28 Aug 2009 14:42:57 +0200
Subject: Fixes: Crash when double-clicking a tab in a QTabBar with movable
 tabs

This is a backport of commit 8ac7e81260

Reviewed-by: Peter Hartmann
---
 src/gui/widgets/qtabbar.cpp | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/gui/widgets/qtabbar.cpp b/src/gui/widgets/qtabbar.cpp
index bd45379..bdc804c 100644
--- a/src/gui/widgets/qtabbar.cpp
+++ b/src/gui/widgets/qtabbar.cpp
@@ -1844,7 +1844,8 @@ void QTabBarPrivate::_q_moveTabFinished(int index)
     Q_Q(QTabBar);
     bool cleanup = (pressedIndex == index) || (pressedIndex == -1) || !validIndex(index);
     if (animations.isEmpty() && cleanup) {
-        movingTab->setVisible(false); // We might not get a mouse release
+        if (movingTab)
+            movingTab->setVisible(false); // We might not get a mouse release
         for (int i = 0; i < tabList.count(); ++i) {
             tabList[i].dragOffset = 0;
         }
-- 
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