Fix potential crash on exit

If we close a browser with a combobox open it may crash on exit due
to double deferred deletion. This patch avoids that by using a smarter
pointer.

Change-Id: I3f1c561b0eb70cf1a51054de51b1027b52cd41b6
Reviewed-by: Michael Brüning <michael.bruning@theqtcompany.com>

1 files changed, 2 insertions, 1 deletions

diff --git a/Source/WebKit/qt/WidgetSupport/QtFallbackWebPopup.h b/Source/WebKit/qt/WidgetSupport/QtFallbackWebPopup.h
index 69b49bdbf..975fa4025 100644
--- a/Source/WebKit/qt/WidgetSupport/QtFallbackWebPopup.h
+++ b/Source/WebKit/qt/WidgetSupport/QtFallbackWebPopup.h
@@ -22,6 +22,7 @@
 
 #include "qwebkitplatformplugin.h"
 #include <wtf/Platform.h>
+#include <QtCore/QPointer>
 
 #ifndef QT_NO_COMBOBOX
 
@@ -56,7 +57,7 @@ private Q_SLOTS:
     void deleteComboBox();
 
 private:
-    QtWebComboBox* m_combo;
+    QPointer<QtWebComboBox> m_combo;
     const QWebPageAdapter* m_page;
     QRect m_geometry;
     QFont m_font;