Added guard to texture image to avoid seg fault when dealing with incomplete databases.
Added guard to texture image to avoid seg fault when dealing with incomplete databases.


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