msys2: fixed ignoring #pragma warning
msys2: fixed ignoring #pragma warning

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