Fixed a file descriptor leak in StatusUpdateManager.
Fixed a file descriptor leak in StatusUpdateManager.

Review: https://reviews.apache.org/r/26879

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