Auto merge of #2879 - QuiltOS:replace-bug, r=alexcrichton
authorbors <bors@rust-lang.org>
Thu, 14 Jul 2016 21:59:03 +0000 (14:59 -0700)
committerGitHub <noreply@github.com>
Thu, 14 Jul 2016 21:59:03 +0000 (14:59 -0700)
Fix #2595 by skipping reflexive replacements

If you know of something better than `source_id == source_id`, I'd gladly change it.


Trivial merge