mbox: Replaced EBADMSG errno for invalid mboxes with EINVAL to fix compiling with OpenBSD. The errno is used only for logging purposes so it doesn't really matter what it is.
mbox: Replaced EBADMSG errno for invalid mboxes with EINVAL to fix compiling with OpenBSD.
The errno is used only for logging purposes so it doesn't really matter what
it is.

Distrotech/dovecot,Distrotech/dovecot,Distrotech/dovecot,Distrotech/dovecot,Distrotech/dovecot