Fix a crash on iOS due to memory alignment since making mNextHandle atomic.
Fix a crash on iOS due to memory alignment since making mNextHandle atomic.

--HG--
branch : v1-9

jhu-lcsr-forks/ogre,jhu-lcsr-forks/ogre,jhu-lcsr-forks/ogre,jhu-lcsr-forks/ogre,jhu-lcsr-forks/ogre