Fix a bug in Unix FileSystemLayerImpl if resolving a symlink fails
Fix a bug in Unix FileSystemLayerImpl if resolving a symlink fails

--HG--
branch : v1-7

nezticle/ogre,jhu-lcsr-forks/ogre,nezticle/ogre,vancepym/ogre,largerussiangames/ogre,largerussiangames/ogre,jhu-lcsr-forks/ogre,vancepym/ogre,vancepym/ogre,vancepym/ogre,largerussiangames/ogre,nezticle/ogre,vancepym/ogre,jhu-lcsr-forks/ogre,largerussiangames/ogre,nezticle/ogre,jhu-lcsr-forks/ogre,jhu-lcsr-forks/ogre