Fix bug 272: Terrain::ImportData copy constructor should init before calling operator=
Fix bug 272: Terrain::ImportData copy constructor should init before calling operator=

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