Added a missing return statement from 45c2444ad.
Added a missing return statement from 45c2444ad.

This commit missed a return statement, which leads to a misleading
log message that the task cannot be killed due to the executor not
being found.

asamerh4/mesos,gsantovena/mesos,dforsyth/mesos,asamerh4/mesos,chhsia0/mesos,abudnik/mesos,reneploetz/mesos,dforsyth/mesos,kaysoky/mesos,chhsia0/mesos,Gilbert88/mesos,zmalik/mesos,gsantovena/mesos,kaysoky/mesos,dforsyth/mesos,dforsyth/mesos,chhsia0/mesos,gsantovena/mesos,abudnik/mesos,asamerh4/mesos,andschwa/mesos,andschwa/mesos,abudnik/mesos,andschwa/mesos,kaysoky/mesos,jpeach/mesos,verizonlabs/mesos,kaysoky/mesos,kaysoky/mesos,andschwa/mesos,zmalik/mesos,Gilbert88/mesos,Gilbert88/mesos,asamerh4/mesos,kaysoky/mesos,zmalik/mesos,reneploetz/mesos,zmalik/mesos,andschwa/mesos,jpeach/mesos,verizonlabs/mesos,zmalik/mesos,reneploetz/mesos,verizonlabs/mesos,chhsia0/mesos,reneploetz/mesos,gsantovena/mesos,abudnik/mesos,abudnik/mesos,jpeach/mesos,gsantovena/mesos,chhsia0/mesos,zmalik/mesos,verizonlabs/mesos,reneploetz/mesos,andschwa/mesos,chhsia0/mesos,zmalik/mesos,verizonlabs/mesos,jpeach/mesos,asamerh4/mesos,Gilbert88/mesos,gsantovena/mesos,gsantovena/mesos,dforsyth/mesos,andschwa/mesos,Gilbert88/mesos,jpeach/mesos,dforsyth/mesos,reneploetz/mesos,Gilbert88/mesos,asamerh4/mesos,verizonlabs/mesos,jpeach/mesos,Gilbert88/mesos,kaysoky/mesos,reneploetz/mesos,asamerh4/mesos,dforsyth/mesos,abudnik/mesos,abudnik/mesos,verizonlabs/mesos,chhsia0/mesos,jpeach/mesos