Move `previousContext` assign within `lock` to make things look safer
Move `previousContext` assign within `lock` to make things look safer

Not an actual requirement, but no harm.

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