message: Use getTile to fix warnings in TileMap::deserialize
diff: @@ -537,8 +537,9 @@ void TileMap::deserialize(NAS2D::Xml::XmlElement* element)
  Mine* m = new Mine();
  m->deserialize(mine->toElement());
  - mTileMap[0][y][x].pushMine(m);
  - mTileMap[0][y][x].index(TerrainType::TERRAIN_DOZED);
  + auto& tile = *getTile({x, y}, 0);
  + tile.pushMine(m);
  + tile.index(TerrainType::TERRAIN_DOZED);
  mMineLocations.push_back(Point{x, y});
  @@ -562,9 +563,10 @@ void TileMap::deserialize(NAS2D::Xml::XmlElement* element)
  attribute = attribute->next();
  }
  - mTileMap[depth][y][x].index(static_cast<TerrainType>(index));
  + auto& tile = *getTile({x, y}, depth);
  + tile.index(static_cast<TerrainType>(index));
  - if (depth > 0) { mTileMap[depth][y][x].excavated(true); }
  + if (depth > 0) { tile.excavated(true); }
  }
  }
  