message: Rename _pt to productType
diff: @@ -32,9 +32,9 @@ const ProductionTypeTable PRODUCTION_TYPE_TABLE =
  };
  -const ProductionCost& productCost(ProductType _pt)
  +const ProductionCost& productCost(ProductType productType)
  {
  - return PRODUCTION_TYPE_TABLE.at(_pt);
  + return PRODUCTION_TYPE_TABLE.at(productType);
  }
  