Fix an odd comment.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@181136 91177308-0d34-0410-b5e6-96231b3b80d8
whitespace

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@181137 91177308-0d34-0410-b5e6-96231b3b80d8