Fixed compile problem under VisualStudio.
Fixed compile problem under VisualStudio.


scrawl/osg,artoolkit/osg,tomasthoresen/osg,marchelbling/osg,marchelbling/osg,tomasthoresen/osg,scrawl/osg,tomasthoresen/osg,artoolkit/osg,marchelbling/osg,artoolkit/osg,scrawl/osg,jtorresfabra/osg,openscenegraph/osg,marchelbling/osg,openscenegraph/osg,tomasthoresen/osg,openscenegraph/osg,jtorresfabra/osg,scrawl/osg,jtorresfabra/osg,artoolkit/osg,jtorresfabra/osg,openscenegraph/osg