Add missing PHPDoc to make codechecker happier

CHANGES.md

@@ -6,6 +6,7 @@ Changes
 
 ### Unreleased
 
+* 2018-05-17 - Add missing PHPDoc to make codechecker happier.
 * 2018-05-16 - Implement Privacy API.
 * 2018-04-25 - Removed build_action_menu_from_navigation in core_renderer as MDL-58174 is integrated.
 * 2018-04-25 - Fixed bug with accessing courses with guest login. Thanks to Benedikt Schneider for reporting and pointing to the solution.

locallib.php

@@ -364,6 +364,12 @@ function theme_boost_campus_get_incourse_activity_settings() {
     return $node;
 }
 
+/**
+ * Build the guest access hint HTML code.
+ *
+ * @param int $courseid The course ID.
+ * @return string.
+ */
 function theme_boost_campus_get_course_guest_access_hint($courseid) {
     global $CFG;
     require_once($CFG->dirroot . '/enrol/self/lib.php');