Oops.

That was unnecessary because set_route() does it already.

src/whiteboard/validate_visitor.cpp

@@ -137,7 +137,6 @@ validate_visitor::VALIDITY validate_visitor::evaluate_move_validity(move_ptr m_p
 			{
 				//new valid path differs from the previous one, replace
 				m.set_route(new_route);
-				m.calculate_move_cost();
 
 				//send updated path to allies
 				resources::whiteboard->queue_net_cmd(side_actions_->make_net_cmd_replace(arg_itor_,m_ptr));