Fixed clang mismatched-tags errors in process.cpp.
Fixed clang mismatched-tags errors in process.cpp.

From: Vinson Lee <25a259f709b0f1b620605d2518271a846d8826e5@freedesktop.org>
Review: https://reviews.apache.org/r/13879

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