From Laurens Voerman, build fix for VS.
From Laurens Voerman, build fix for VS.


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