MDL-31238 remove now unnecessary null to stdClass conversion for plugin settings

lib/enrollib.php

@@ -950,10 +950,7 @@ abstract class enrol_plugin {
     protected function load_config() {
         if (!isset($this->config)) {
             $name = $this->get_name();
-            if (!$config = get_config("enrol_$name")) {
-                $config = new stdClass();
-            }
-            $this->config = $config;
+            $this->config = get_config("enrol_$name");
         }
     }
 

message/lib.php

@@ -2345,11 +2345,7 @@ function get_message_processor($type) {
  * @return object $processors object containing information on message processors
  */
 function get_message_output_default_preferences() {
-    $preferences = get_config('message');
-    if (!$preferences) {
-        $preferences = new stdClass();
-    }
-    return $preferences;
+    return get_config('message');
 }
 
 /**