FIx typo in closing GLX window as pointed out in patch 2182673
FIx typo in closing GLX window as pointed out in patch 2182673

paroj/ogre,OGRECave/ogre,RealityFactory/ogre,paroj/ogre,OGRECave/ogre,paroj/ogre,paroj/ogre,OGRECave/ogre,OGRECave/ogre,RealityFactory/ogre,OGRECave/ogre,paroj/ogre,RealityFactory/ogre,RealityFactory/ogre,RealityFactory/ogre