Inline and refactor overly verbose `MessageNotifier` code
Inline and refactor overly verbose `MessageNotifier` code

UselessToucan/osu,UselessToucan/osu,NeoAdonis/osu,smoogipooo/osu,peppy/osu-new,ppy/osu,peppy/osu,smoogipoo/osu,ppy/osu,smoogipoo/osu,NeoAdonis/osu,UselessToucan/osu,smoogipoo/osu,ppy/osu,NeoAdonis/osu,peppy/osu,peppy/osu