Re: sequencer "edit" command always issues a warning

I was rebasing with the new built-in sequencer code today, and I was
surprised to see the use of warning() here:

  $ git rebase -i
  [set one commit to 'edit']
  warning: stopped at 6ce6b914a... odb_pack_keep(): stop generating keepfile name
  You can amend the commit now, with
    [...more instructions...]

It alarmed me for a minute until I realized that no, this is nothing to
be alarmed about, but just git doing exactly what I told it to do.

The original just wrote:

  Stopped at 6ce6b914a... odb_pack_keep(): stop generating keepfile name

It would be easy to switch back:

diff --git a/sequencer.c b/sequencer.c
index 1f729b053..8183a83c1 100644
--- a/sequencer.c
+++ b/sequencer.c

@@ -1997,7 +1997,8 @@ static int pick_commits(struct todo_list *todo_list, struct replay_opts *opts)
 			if (item->command == TODO_EDIT) {
 				struct commit *commit = item->commit;
 				if (!res)
-					warning(_("stopped at %s... %.*s"),
+					fprintf(stderr,
+						_("Stopped at %s...  %.*s"),
 						short_commit_name(commit),
 						item->arg_len, item->arg);
 				return error_with_patch(commit,

and that would match most of the other messages that the command issues,
which use a bare fprintf() and start with a capital letter. But I'm not
sure if there was some reason to treat this one differently.