Merge branch 'jc/diff-tree-stale-comment' into maint

Comment fix. * jc/diff-tree-stale-comment: diff-tree: update stale in-code comments

Junio C Hamano committed Jun 24, 2017 at 15:29 UTC b960cd37c6ec11b35802216c38c9d02886f4fce8

No changes.