From Ruben, fix for gcc 3.4 build
From Ruben, fix for gcc 3.4 build


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