BugLink: http://bugs.launchpad.net/bugs/1512221

It might happen that we try to free an already freed pointer.
Reported-by: Maurizio Lombardi <mlombard@redhat.com>
Signed-off-by: Tomas Henzl <thenzl@redhat.com>
Acked-by: Chaitra P B <chaitra.basappa@avagotech.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
(cherry picked from commit 5f985d88)
Signed-off-by: Tim Gardner <tim.gardner@canonical.com>