Fix to CullVisitor::popCullingSet().
Fix to CullVisitor::popCullingSet().


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