Merge 'jk/diff-release-filespec-fix' into js/default-branch-name-tests-final-stretch

* jk/diff-release-filespec-fix: t7800: simplify difftool test diff: allow passing NULL to diff_free_filespec_data()

Junio C Hamano committed Nov 19, 2020 at 15:27 UTC fced6d171e0e242e330dd71b123de4bcd2616f0b

No changes.