message: Use static_cast to convert sign in ListBoxBase
diff: @@ -83,7 +83,7 @@ void ListBoxBase::_update_item_display()
  {
  mSlider.position({rect().x + mRect.width - 14, mRect.y});
  mSlider.size({14, mRect.height});
  - mSlider.length(static_cast<float>(mItemHeight * mItems.size() - mRect.height));
  + mSlider.length(static_cast<float>(mItemHeight * static_cast<int>(mItems.size()) - mRect.height));
  mCurrentOffset = static_cast<unsigned int>(mSlider.thumbPosition());
  mItemWidth -= static_cast<unsigned int>(mSlider.size().x);
  mSlider.visible(true);
  