message: Fix warning in FactoryProduction
diff: @@ -39,7 +39,7 @@ void FactoryProduction::init()
  size({320, 162});
  // Set up GUI Layout
  - add(&mProductGrid, static_cast<float>(constants::MARGIN), 25);
  + add(&mProductGrid, constants::MARGIN, 25);
  mProductGrid.sheetPath("ui/factory.png");
  mProductGrid.size({140, 110});
  mProductGrid.iconSize(32);
  