OS X: Fix an error that shows up with clang sometimes.
OS X: Fix an error that shows up with clang sometimes.

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