Fix a data race
Fix a data race

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