message: Fix warnings when calling ProductListBox drawItem
diff: @@ -109,9 +109,9 @@ void ProductListBox::update()
  {
  drawItem(renderer, *static_cast<ProductListBoxItem*>(mItems[i]),
  positionX(),
  - positionY() + (i * LIST_ITEM_HEIGHT),
  - static_cast<float>(item_width()),
  - static_cast<float>(draw_offset()),
  + positionY() + (static_cast<int>(i) * LIST_ITEM_HEIGHT),
  + item_width(),
  + draw_offset(),
  i == currentSelection());
  }
  