Patch 3525902 - SceneManager - Fix for when a listener object unreferences itself from the listened object while in a callback
Patch 3525902 - SceneManager - Fix for when a listener object unreferences itself from the listened object while in a callback

--HG--
branch : v1-8

digimatic/ogre,digimatic/ogre,digimatic/ogre,digimatic/ogre,digimatic/ogre,digimatic/ogre,digimatic/ogre