scsi_target witness lock error

[Sean Bruno]

While I was debugging some random stuff with the firewire target, I
noted the following witness lock:

http://www.consultcsg.com/scsitarget_witness.txt

It looks like there is some kind of conflict between the locks in
sys/cam/scsi/scsi_target.c and the kern environment locks?  I'm fairly
certain that this is an easy fix, but I just don't see how to work
around it.

Sean