Fix -Wunused-but-set-variable warning.

Summary: A follow-up fix on r279958.

Reviewers: bkramer

Subscribers: cfe-commits

Differential Revision: https://reviews.llvm.org/D23989

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@279964 91177308-0d34-0410-b5e6-96231b3b80d8
1 file changed