Improvement: Also hide duration on optionview.php if setting to hide …

…duration for selflearningcourses is active.

classes/output/bookingoption_description.php

@@ -268,7 +268,9 @@ public function __construct(
         if (!empty($settings->selflearningcourse)) {
             $this->selflearningcourse = true;
 
-            if (!empty($settings->duration)) {
+            if (get_config('booking', 'selflearningcoursehideduration')) {
+                $this->selflearningcourseshowdurationinfo = null;
+            } else if (!empty($settings->duration)) {
                 // We do not show duration info if it is set to 0.
                 $this->selflearningcourseshowdurationinfo = true;