Workout History is misbehaving for coastal

[Gregory Smith]

I was looking at my 28 day history and I saw that the stats for coastal rows were wrong.

Coastal

‌

Narrowed the HR stats to just Coastal, I saw that there was -32:53:49 of <ut2.

I narrowed into two workouts. One on 6/16 and another on 6/17. When I used the history on each individually, it worked fine, but when I used a date range that included both workouts, I got an erroneous negative time value for <ut2

6/17: https://rowsandall.com/rowers/workout/97497d61/

6/16: https://rowsandall.com/rowers/workout/f15b21f3/

Potential clue. There is a duplicate workout for the 6/17 session marked as private and duplicate.

[Sander Roosendaal]

fix #563

→ <<cset 4b5d350d49ab>>