K 10
svn:author
V 6
eadler
K 8
svn:date
V 27
2012-06-20T06:38:41.714367Z
K 7
svn:log
V 254
Don't close an uninitialized descriptor. [1]
Add a sanity check for the validity of the passed fd.

PR:		kern/139080 [1]
Submitted by:	Andrey Simonenko <simon@comsys.ntu-kpi.kiev.ua> [1]
Reviewed by:	pjd (briefly)
Approved by:	cperciva
MFC after:	1 week

END