correct: Work around a compiler mis-optimization
correct: Work around a compiler mis-optimization

This was not a compiler optimization that misfired, rather that
the code neede separate case clauses for when the timer was
running and not, so to not call erlang:cancel_timer/1 nor
maps:remove/2 in the case clause where only
a map update was needed before recursion.

See the comment in loop_timouts_cancel/13

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