K 10
svn:author
V 3
pfg
K 8
svn:date
V 27
2015-04-20T16:40:13.424540Z
K 7
svn:log
V 243
Prevent a double free.

This is similar to r281756 so set the ptr NULL after free as a safety belt
against future changes.

Obtained from:	HardenedBSD (b2e77ced9ae213d358b44d98f552d9ae4636ecac)
Submitted by:	Oliver Pinter
Revewed by:	rmacklem

END