Kevin O'Connor c4de0bba50 pid_calibrate: Avoid internal error on a shutdown
If a shutdown occurs during a PID_CALIBRATE command (eg, due to a
heater problem) then exit cleanly instead of throwing an internal
error.

Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
2020-06-14 11:34:04 -04:00
..
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