fix: autodetect piping (#743)
fix: autodetect piping (#743)

...pipe(autodetect).pipe(smthing)
has been working, but one more level
...pipe(ad).pipe(smthing).pipe(else)
failed, because autodetect.pipe was not
returning anything.
SignalK/signalk-server-node,SignalK/signalk-server-node,SignalK/signalk-server-node,SignalK/signalk-server-node