Compile fix for Mingw.
Compile fix for Mingw.


git-svn-id: aa838dfc23441284dd616281de4245daec5d2135@15029 16af8721-9629-0410-8352-f15c8da7e697

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