Prevent crash at access to deleted social data for player.

Remove social data at logout instead ~Player that called also for temporary Player object for Player::MinimalLoadFromDB call.

src/game/WorldSession.cpp

@@ -380,6 +380,7 @@ void WorldSession::LogoutPlayer(bool Save)
         ///- Delete the player object
         _player->CleanupsBeforeDelete();                    // do some cleanup before deleting to prevent crash at crossreferences to already deleted data
 
+        sSocialMgr.RemovePlayerSocial (_player->GetGUIDLow ());
         delete _player;
         _player = NULL;