DDSCodec - Fixed crash when no render system exists. (Used AtlasImageTool of PU on DDS source files)
DDSCodec - Fixed crash when no render system exists. (Used AtlasImageTool of PU on DDS source files)

--HG--
extra : rebase_source : d5907dba85142f9e1871935d8ff53558ec3361ca

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