Patch to get arm running on FreeBSD again
8dbea0fa broke arm on FreeBSD for me.
$ ./arm get_bsd_jail_id() takes exactly 1 argument (0 given)
The attached patch gets arm running again.
The jail detection appears to still be broken, but this seems to be an unrelated problem and I rediscovered some patches in a stem branch that look relevant.
I'll file a stem ticket about this once I have more information.
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