step/run-script: fix log timeout error message
step/run-script: fix log timeout error message

It was including the hard timeout instead of the log timeout. Since the log
timeout is usually much shorter than the hard timeout, this could lead to some
confusing error messages.

Acidburn0zzz/worker,travis-ci/worker,travis-ci/worker,travis-ci/worker,Acidburn0zzz/worker,Acidburn0zzz/worker,solarce/worker,henrikhodne-abandoned/worker,solarce/worker,henrikhodne-abandoned/worker,solarce/worker,henrikhodne-abandoned/worker