Git commits in Moodle 3.0.9 by Andrew Nicols

commit 87f6a483c3b6b5321b5aa2993df8486deb95e591
Author: Andrew Nicols <andrew@nicols.co.uk>
Date:   Thu, 19 Jan 2017 13:47:40 +0800
Tag:    v3.0.9

MDL-57639 mod_forum: Update to use correct variable name