Merge branch 'mm/no-shell-escape-in-die-message'

Merge branch 'mm/no-shell-escape-in-die-message'

Fixes a minor bug in "git rebase -i" (there could be others, as the
root cause is pretty generic) where the code feeds a random, data
dependeant string to 'echo' and expects it to come out literally.

* mm/no-shell-escape-in-die-message:
  die_with_status: use "printf '%s\n'", not "echo"