Added VS checks around code block from Mark Sciabica that broke the mingw build
Added VS checks around code block from Mark Sciabica that broke the mingw build


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