Gracefully handle undefined `DateTimeOffset` values
Gracefully handle undefined `DateTimeOffset` values

Only seems to happen in tests, but best to safeguard against this
regardless.

NeoAdonis/osu,ppy/osu,NeoAdonis/osu,ppy/osu,peppy/osu,peppy/osu,ppy/osu,peppy/osu,NeoAdonis/osu