[Dovecot] dovecot-1.0b3 kevent error/warning message

[John Wong]

i use openbsd/i386, dovecot-1.0b3,
i see some kevent error/warning message in maillog like this:

--------------------------------------------------------
imap(username): kevent(1) in io_loop_handle_add() failed: Bad file
descriptor
imap(username): kevent(1) in io_loop_handle_remove failed: Bad file
descriptor
--------------------------------------------------------