Simplify hashing method
Simplify hashing method

Also exit the import process before importing files to the file store to avoid incorrect reference count increments.
peppy/osu,naoey/osu,smoogipooo/osu,ppy/osu,Nabile-Rahmani/osu,UselessToucan/osu,DrabWeb/osu,DrabWeb/osu,peppy/osu,ZLima12/osu,peppy/osu,EVAST9919/osu,2yangk23/osu,ppy/osu,smoogipoo/osu,johnneijzen/osu,NeoAdonis/osu,ZLima12/osu,johnneijzen/osu,ppy/osu,naoey/osu,2yangk23/osu,Damnae/osu,smoogipoo/osu,naoey/osu,UselessToucan/osu,NeoAdonis/osu,EVAST9919/osu,UselessToucan/osu,smoogipoo/osu,NeoAdonis/osu,peppy/osu-new,Drezi126/osu,DrabWeb/osu,Frontear/osuKyzer