Avoid one notice in backup. Bug 5709. (http://moodle.org/bugs/bug.php?op=show&bugid=5709&)
Avoid one notice in backup. Bug 5709.
(http://moodle.org/bugs/bug.php?op=show&bugid=5709&)

Merged from MOODLE_16_STABLE

dilawar/moodle