Added temporary reset of the RenderLeaf pointer for any internal calls to other graphics contexts.
Added temporary reset of the RenderLeaf pointer for any internal calls to other graphics contexts.


omega-hub/osg,ghub/osg,ghub/osg,artoolkit/osg,omega-hub/osg,stmh/osg,koshman86/osg,XiaoCC/osg,stmh/osg,koshman86/osg,artoolkit/osg,ntoand/osg,stmh/osg,koshman86/osg,omega-hub/osg,artoolkit/osg,XiaoCC/osg,omega-hub/osg,ntoand/osg,ghub/osg,XiaoCC/osg,artoolkit/osg,ntoand/osg,XiaoCC/osg,ntoand/osg,stmh/osg,stmh/osg,XiaoCC/osg,ghub/osg,koshman86/osg