message: Rename `r` to `robotToDelete`
  This is to differntiate from `robot`, which is used later in the method
  in the `for` loop. Technically, it would not conflict, but one would
  shadow the other, so it seems cleaner to use a different name.
diff: @@ -248,9 +248,9 @@ bool landingSiteSuitable(TileMap* tilemap, int x, int y)
  /**
  * Document me!
  */
  -void deleteRobotsInRCC(Robot* r, RobotCommand* rcc, RobotPool& rp, RobotTileTable& rtt, Tile* /*tile*/)
  +void deleteRobotsInRCC(Robot* robotToDelete, RobotCommand* rcc, RobotPool& rp, RobotTileTable& rtt, Tile* /*tile*/)
  {
  - if (rcc->commandedByThis(r))
  + if (rcc->commandedByThis(robotToDelete))
  {
  std::cout << "Cannot bulldoze Robot Command Center by a Robot under its command." << std::endl;
  return;
  