adding include_once for gradelib public api function

diff --git a/mod/forum/lib.php b/mod/forum/lib.php
index 91f4d5b2279c10aa7c0e8dda977c99641c5f5874..bbae2c3f60bf954fd28e37644ead089d2e074502 100644 (file)
--- a/mod/forum/lib.php
+++ b/mod/forum/lib.php
@@ -1132,6 +1132,7 @@ function forum_update_grades($forum=null, $userid=0, $nullifnone=true) {
     global $CFG;
 
     if ($forum != null) {
+        require_once($CFG->libdir.'/lib/gradelib.php');
         if ($grades = forum_get_user_grades($forum, $userid)) {
             grade_update('mod/forum', $forum->course, 'mod', 'forum', $forum->id, 0, $grades);