kern/91338: Adding a devfs rule with a rule set number of 0 locks the devfs rules

[Robert Watson]

Synopsis: Adding a devfs rule with a rule set number of 0 locks the devfs rules

State-Changed-From-To: open->closed
State-Changed-By: rwatson
State-Changed-When: Sat Jan 14 08:49:47 UTC 2006
State-Changed-Why: 
This is a dup of bin/88463, and was corrected by a recent commit and
MFC I made (with an identical fix to the one proposed here).

Thanks!


http://www.freebsd.org/cgi/query-pr.cgi?pr=91338