message: Fix Slider orientation for MainMenuOptions
diff: @@ -54,8 +54,8 @@ private:
  CheckBox cbxVSync;
  CheckBox cbxSkipSplash;
  CheckBox cbxStartMaximized;
  - Slider sldrMusicVolume;
  - Slider sldrSoundVolume;
  + Slider sldrMusicVolume{Slider::SliderType::Horizontal};
  + Slider sldrSoundVolume{Slider::SliderType::Horizontal};
  UIContainer pnlButtons;
  Button btnOk;
  