Merge branch 'cw/diff-highlight'

Portability fix for a diff-highlight tool (in contrib/). * cw/diff-highlight: diff-highlight: use correct /dev/null for UNIX and Windows

Junio C Hamano committed May 19, 2019 at 16:45 UTC 18cfb74f31209007e3a960efa594c25abd8a4cac

No changes.