Fix for 64bit build.
Fix for 64bit build.


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