Fix bug locking and unlocking texture buffers in OgreMeshRayTrace.cpp.
Fix bug locking and unlocking texture buffers in OgreMeshRayTrace.cpp.

sirikata/sirikata,sirikata/sirikata,sirikata/sirikata,sirikata/sirikata,sirikata/sirikata,sirikata/sirikata,sirikata/sirikata,sirikata/sirikata