5182 use after free in blkdev
Reviewed by: Marcel Telka <marcel@telka.sk>
Reviewed by: Igor Kozhukhov <ikozhukhov@gmail.com>
Reviewed by: Josef 'Jeff' Sipek <jeffpc@josefsipek.net>
Reviewed by: Garrett D'Amore <garrett@damore.org>
Approved by: Dan McDonald <danmcd@omniti.com>