Fix a reference-to-temporary introduced in r286607.
Fix a reference-to-temporary introduced in r286607.

git-svn-id: 0ff597fd157e6f4fc38580e8d64ab130330d2411@286640 91177308-0d34-0410-b5e6-96231b3b80d8
(cherry picked from commit cd5b334349a8770045ed3e89b4489adbc8e5f099)

apple/swift-llvm,apple/swift-llvm,apple/swift-llvm,apple/swift-llvm,apple/swift-llvm,apple/swift-llvm,apple/swift-llvm,apple/swift-llvm