Git commits in Moodle 2.3.8 by Adam Olley

commit 8d148dd8661217fe42245969328d9d87991f1bd0
Author: Adam Olley <adam.olley@netspot.com.au>
Date:   Fri, 31 May 2013 07:59:56 +0800
Tag:    v2.3.8

MDL-39947 mod_forum: Add safety check to variable assignment when counting unread posts