message: Use dictionaryToAttributes for food level
diff: @@ -79,9 +79,12 @@ namespace
  if (structure->structureClass() == Structure::StructureClass::FoodProduction ||
  structure->structureId() == StructureID::SID_COMMAND_CENTER)
  {
  - auto* food = new NAS2D::Xml::XmlElement("food");
  - food->attribute("level", static_cast<FoodProduction*>(structure)->foodLevel());
  - structureElement->linkEndChild(food);
  + structureElement->linkEndChild(
  + NAS2D::dictionaryToAttributes(
  + "food",
  + {{{"level", static_cast<FoodProduction*>(structure)->foodLevel()}}}
  + )
  + );
  }
  if (structure->structureClass() == Structure::StructureClass::Residence)
  