Changed to use ref_ptr<> for scene model to avoid crash
Changed to use ref_ptr<> for scene model to avoid crash


openscenegraph/osg,marchelbling/osg,tomasthoresen/osg,tomasthoresen/osg,jtorresfabra/osg,marchelbling/osg,jtorresfabra/osg,scrawl/osg,openscenegraph/osg,artoolkit/osg,openscenegraph/osg,scrawl/osg,artoolkit/osg,marchelbling/osg,artoolkit/osg,artoolkit/osg,scrawl/osg,scrawl/osg,jtorresfabra/osg,tomasthoresen/osg,marchelbling/osg,tomasthoresen/osg,jtorresfabra/osg,openscenegraph/osg