rem: if ( g->getNormals() == OSG::GeoNormalPtr::NullPtr )
add: if ( g->getNormals() == OSG::NullFC )
context: OSG::Action::ResultE calcVNormal( OSG::CNodePtr &, OSG::Action * action ){	OSG::NodePtr node = action->getActNode();	OSG::GeometryPtr g = OSG::GeometryPtr::dcast( node->getCore() );	if ( g->getNormals() == OSG::GeoNormalPtr::NullPtr )	{		OSG::calcVertexNormals( g );	}			return OSG::Action::Continue;}