[ELF] Fix a typo introduced in r308915.
[ELF] Fix a typo introduced in r308915.

Thanks to Rafael for finding it in a post-commit review.

git-svn-id: f6089bf0e6284f307027cef4f64114ee9ebb0424@308921 91177308-0d34-0410-b5e6-96231b3b80d8

llvm-mirror/lld,llvm-mirror/lld