[bug-mailutils] but there was no Subject

[Dan Jacobson]

I note that mail creates subjects here if there is none:
$ mail -H
>N   1 Anacron            Wed Jul 12 00:05  30/1809  Anacron job 'cron.daily'
 N   2 root               Wed Jul 12 00:09  17/737   root
 N   3 Anacron            Wed Jul 12 00:12  44/3083  Anacron job 'cron.weekly'
 N   4 Dan Jacobson       Wed Jul 12 00:15  10/298   Dan Jacobson