Fix OverlayManager::getViewportAspectRatio, was inverted
Fix OverlayManager::getViewportAspectRatio, was inverted

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