message: Remove check for nullptr Tile
  This can no longer occur due to early bounds check. Valid tile
  coordinates will always be used.
diff: @@ -617,7 +617,7 @@ void TileMap::AdjacentCost(void* state, std::vector<micropather::StateCost>* adj
  Tile* adjacent_tile = getTile(position, 0);
  float cost = constants::ROUTE_BASE_COST;
  - if (!adjacent_tile || adjacent_tile->index() == TerrainType::TERRAIN_IMPASSABLE)
  + if (adjacent_tile->index() == TerrainType::TERRAIN_IMPASSABLE)
  {
  cost = FLT_MAX;
  }
  