From Terry Welsh, added missing static_cast in Referenced.cpp
From Terry Welsh, added missing static_cast in Referenced.cpp


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