- Update to mutt 2.2.13 (Bug fix release)
* Fix smtp client to respect $use_envelope_from option. The code
was only looking to see if $envelope_from_address had a value,
not if $use_envelope_from was set.
Add extra safety checks to make sure the mailbox value isn't NULL.
* Fix smtp client $envelope_from_address possible dangling pointer.
If the account-hook invoked by mutt_conn_find() modifies
$envelope_from_address, envfrom could point no longer point to the
address.
Move the mutt_conn_find() before the code that determines the envelope
from address.