message: Use mLineHeight instead of recalculating
diff: @@ -216,7 +216,7 @@ void ListBox::onMouseMove(int x, int y, int /*relX*/, int /*relY*/)
  return;
  }
  - mCurrentHighlight = (static_cast<std::size_t>(y - mRect.y) + mScrollOffsetInPixels) / static_cast<std::size_t>(mFont.height() + 2);
  + mCurrentHighlight = (static_cast<std::size_t>(y - mRect.y) + mScrollOffsetInPixels) / static_cast<std::size_t>(mLineHeight);
  if (mCurrentHighlight >= mItems.size())
  {
  