Typo correct the condition of 'do-while' before exiting its scope

rdar://35172419

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@316966 91177308-0d34-0410-b5e6-96231b3b80d8
(cherry picked from commit 597fe911c137f5d3ccd6678925a0848d2cc1455e)
2 files changed