ocserv 0.11.1 can not fork into background on FreeBSD

[hshh]

Compiled 0.11.1 on FreeBSD 10.2.
ocserv can be run as forgeground, but core dump if fork to background.

ocserv[97088]: sec-mod: Error in pselect(): Bad file descriptor
ocserv[97087]: error connecting to sec-mod socket
'/var/run/ocserv-socket.97087': Connection refused
ocserv[97087]: main: main.c:1144: libev fatal error: (libev) kevent
kernel: pid 97087 (ocserv), uid 0: exited on signal 6 (core dumped)

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@hshh