message: Simplify ProductCatalogue::product()
diff: @@ -56,13 +56,5 @@ ProductCatalogue::ProductCatalogue(const std::string& catalogFile)
  const ProductCatalogue::Product& ProductCatalogue::product(ProductType type) const
  {
  - const auto& product = mProductTable.find(type);
  - if (product != mProductTable.end())
  - {
  - return product->second;
  - }
  - else
  - {
  - throw std::runtime_error("Unknown ProductType: " + std::to_string(static_cast<int>(type)));
  - }
  + return mProductTable.at(type);
  }
  