Removed logically dead code detected by Coverity
Removed logically dead code detected by Coverity

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