Add if (!textureStateSet) return check to replace assert() to prevent crashes when multi-texture layers don't exist.
Add if (!textureStateSet) return check to replace assert() to prevent crashes
when multi-texture layers don't exist.


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