There are scores with no user associated for some reason.
There are scores with no user associated for some reason.

Return placeholder user instead null. All the Score definitions assume
user is non-nullable.

ppy/osu-web,LiquidPL/osu-web,ppy/osu-web,notbakaneko/osu-web,nekodex/osu-web,omkelderman/osu-web,notbakaneko/osu-web,ppy/osu-web,LiquidPL/osu-web,nekodex/osu-web,LiquidPL/osu-web,notbakaneko/osu-web,ppy/osu-web,ppy/osu-web,nanaya/osu-web,nanaya/osu-web,omkelderman/osu-web,LiquidPL/osu-web,nekodex/osu-web,nanaya/osu-web,notbakaneko/osu-web,notbakaneko/osu-web,nekodex/osu-web,omkelderman/osu-web,nanaya/osu-web,nanaya/osu-web,omkelderman/osu-web,nekodex/osu-web,LiquidPL/osu-web