bug#51334: RMAIL error on send C-c C-c

[Nick Strauss]

Hi,
I have several debian accounts with email. One such account started
having difficulty. When trying to send an email while in an RMAIL buffer
using C-c C-c, emacs crashes unexpectedly with this error:
emacs[0x541b30]
emacs[0x50bc8f]
emacs[0x50c003]
...
Illegal instruction

It probably is some kind of interaction with the underlying linux mailer
that is killing emacs, but it would be nice to have some graceful exit,
and perhaps some chance of debugging the problem, with my limited
knowlege and abiliti3s.

Thank you.