fixed warnings on save profile; merged from MOODLE_16_STABLE

diff --git a/user/edit.php b/user/edit.php
index 63d574eae2295852bdb14aa099cf5461c3f8283d..b07443d4b98e38a44a0418bc6a86b870606e6933 100644 (file)
--- a/user/edit.php
+++ b/user/edit.php
@@ -150,7 +150,10 @@
             $fields = get_user_fieldnames();
             $authconfig = get_config( 'auth/' . $user->auth );
             foreach ($fields as $field) {
-                $configvariable = 'field_lock_' . $field;  
+                $configvariable = 'field_lock_' . $field;
+                if ( empty($authconfig->{$configvariable}) ) {
+                    continue; //no locking set
+                }
                 if ( $authconfig->{$configvariable} === 'locked'
                      || ($authconfig->{$configvariable} === 'unlockedifempty' && !empty($user->$field)) ) {
                     if (!empty( $user->$field)) {