Fixed minor code style issue.
Fixed minor code style issue.

Review: https://reviews.apache.org/r/50837/

zmalik/mesos,yuquanshan/customizedMesos,gsantovena/mesos,reneploetz/mesos,dforsyth/mesos,gsantovena/mesos,neilconway/mesos,neilconway/mesos,craimbert/mesos,yuquanshan/customizedMesos,asamerh4/mesos,dforsyth/mesos,abudnik/mesos,jpeach/mesos,verizonlabs/mesos,asamerh4/mesos,dforsyth/mesos,asamerh4/mesos,zmalik/mesos,verizonlabs/mesos,verizonlabs/mesos,abudnik/mesos,craimbert/mesos,dforsyth/mesos,chhsia0/mesos,craimbert/mesos,Aman-Jain-14/customizedMesos,chhsia0/mesos,kaysoky/mesos,craimbert/mesos,asamerh4/mesos,kaysoky/mesos,neilconway/mesos,jpeach/mesos,gsantovena/mesos,verizonlabs/mesos,Gilbert88/mesos,reneploetz/mesos,verizonlabs/mesos,abudnik/mesos,neilconway/mesos,neilconway/mesos,Gilbert88/mesos,verizonlabs/mesos,abudnik/mesos,asamerh4/mesos,reneploetz/mesos,craimbert/mesos,craimbert/mesos,kaysoky/mesos,jpeach/mesos,andschwa/mesos,yuquanshan/customizedMesos,dforsyth/mesos,Aman-Jain-14/customizedMesos,kaysoky/mesos,chhsia0/mesos,chhsia0/mesos,Aman-Jain-14/customizedMesos,Gilbert88/mesos,Aman-Jain-14/customizedMesos,zmalik/mesos,reneploetz/mesos,chhsia0/mesos,craimbert/mesos,andschwa/mesos,verizonlabs/mesos,yuquanshan/customizedMesos,jpeach/mesos,chhsia0/mesos,yuquanshan/customizedMesos,yuquanshan/customizedMesos,Aman-Jain-14/customizedMesos,neilconway/mesos,zmalik/mesos,gsantovena/mesos,andschwa/mesos,reneploetz/mesos,jpeach/mesos,zmalik/mesos,jpeach/mesos,asamerh4/mesos,gsantovena/mesos,Gilbert88/mesos,andschwa/mesos,chhsia0/mesos,dforsyth/mesos,abudnik/mesos,asamerh4/mesos,Gilbert88/mesos,zmalik/mesos,dforsyth/mesos,neilconway/mesos,zmalik/mesos,jpeach/mesos,kaysoky/mesos,reneploetz/mesos,yuquanshan/customizedMesos,reneploetz/mesos,gsantovena/mesos,Gilbert88/mesos,Aman-Jain-14/customizedMesos,Gilbert88/mesos,andschwa/mesos,andschwa/mesos,Aman-Jain-14/customizedMesos,abudnik/mesos,abudnik/mesos,andschwa/mesos,gsantovena/mesos,kaysoky/mesos,kaysoky/mesos