... and therefore should be marked static.

BugLink: https://bugs.launchpad.net/bugs/1616813Signed-off-by: Jiri Kosina <jkosina@suse.cz>
(cherry picked from commit 41f61ecc)
Signed-off-by: Ying-Chun Liu (PaulLiu) <paul.liu@canonical.com>
Acked-by: Brad Figg <brad.figg@canonical.com>
Signed-off-by: Tim Gardner <tim.gardner@canonical.com>