Git commits in Moodle 3.0.9 by David Mudrák

commit c4fabc91e1986f363e013bd392f622e7474029d8
Author: David Mudrák <david@moodle.com>
Date:   Wed, 18 Jan 2017 02:27:57 +0800
Tag:    v3.0.9

MDL-57677 mod_forum: Fix wrong user displayed as the last post's author