[OGRE-54 / D3D9]: Fix possible null pointer dereference
[OGRE-54 / D3D9]: Fix possible null pointer dereference

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branch : v1-9

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