Fix off-by-one error in determining whether to call TerrainQuadTreeNode::useAncestorVertexData
Fix off-by-one error in determining whether to call TerrainQuadTreeNode::useAncestorVertexData

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