Check that pixmap is not null before accessing it

If QMeeGoGraphicsSystem::createPixmapData is called with origin raster
pixmap data holding null image would result to null pointer deference
when trying to fetch data pointer.

To avoid the crash at graphics system switch pixmap data should be
checked if it is NULL.

Fixes: NB#237972

Signed-off-by: Pauli Nieminen <ext-pauli.nieminen@nokia.com>

Merge-request: 1160
Reviewed-by: Jørgen Lind <jorgen.lind@nokia.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/src/plugins/graphicssystems/meego/qmeegographicssystem.cpp b/src/plugins/graphicssystems/meego/qmeegographicssystem.cpp
index c904c3c..c515f55 100644
--- a/src/plugins/graphicssystems/meego/qmeegographicssystem.cpp
+++ b/src/plugins/graphicssystems/meego/qmeegographicssystem.cpp
@@ -217,7 +217,7 @@ QPixmapData *QMeeGoGraphicsSystem::createPixmapData(QPixmapData *origin)
     // and if the pixmap pointer matches our mapping...
     // create a shared image instead with the given handle.
 
-    if (origin->classId() == QPixmapData::RasterClass) {
+    if (!origin->isNull() && origin->classId() == QPixmapData::RasterClass) {
         QRasterPixmapData *rasterClass = static_cast <QRasterPixmapData *> (origin);
         void *rawResource = static_cast <void *> (rasterClass->buffer()->data_ptr()->data);