[Dovecot] Error compiling pigeonhole 0.3.0 with dovecot-2.1.5 in openbsd 5.0

[Joseba Torre]

>
> Looks like BSD doesn't know EPROTO (although it is POSIX). Dovecot uses
> EIO elsewhere for such stream errors, so I adopted that for ManageSieve
> as well. This should fix it:
>
> http://hg.rename-it.nl/dovecot-2.1-pigeonhole/rev/ef5045159e6b
>
> Regards,

Perfect, thank you