QShapedPixmapWindow: do not leak the backing store

Change-Id: Id7cc8cbbcd62c546055d525473f90d2bad0c144a
Reviewed-by: Laszlo Agocs <laszlo.agocs@digia.com>
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@digia.com>

src/gui/kernel/qshapedpixmapdndwindow.cpp

@@ -52,6 +52,12 @@ QShapedPixmapWindow::QShapedPixmapWindow()
     m_backingStore = new QBackingStore(this);
 }
 
+QShapedPixmapWindow::~QShapedPixmapWindow()
+{
+    delete m_backingStore;
+    m_backingStore = 0;
+}
+
 void QShapedPixmapWindow::render()
 {
     QRect rect(QPoint(), geometry().size());

src/gui/kernel/qshapedpixmapdndwindow_p.h

@@ -56,6 +56,7 @@ class QShapedPixmapWindow : public QWindow
     Q_OBJECT
 public:
     QShapedPixmapWindow();
+    ~QShapedPixmapWindow();
 
     void render();