kern/154152: [bktr] memory leak fix needs MFC

[linimon at FreeBSD.org]

Old Synopsis: BKTR memory leak fix, MFC
New Synopsis: [bktr] memory leak fix needs MFC

State-Changed-From-To: open->patched
State-Changed-By: linimon
State-Changed-When: Thu Jan 20 11:17:42 UTC 2011
State-Changed-Why: 
Set this as an MFC reminder.  Original committer has returned his bit
for safekeeping.

http://www.freebsd.org/cgi/query-pr.cgi?pr=154152