Fixed the checks in method getMemberStatusByUserAndVo() in AdapterLDAP

* Added check if $group_id is null

Author: Pavel Vyskočil

CHANGELOG.md

@@ -6,6 +6,7 @@ All notable changes to this project will be documented in this file.
 - Added missing space before 'addInstitutionButton' or link
 - Added missing import
 - Fixed the style of changelog
+- Fixed the checks in method getMemberStatusByUserAndVo() in AdapterLDAP
 
 ## [v3.0.3]
 #### Fixed

lib/AdapterLdap.php

@@ -325,10 +325,9 @@ public function getMemberStatusByUserAndVo($user, $vo)
             array("perunGroupid")
         );
 
-        if (empty($groupId)) {
+        if ($groupId === null || empty($groupId)) {
             return Member::INVALID;
-        } else {
-            return Member::VALID;
         }
+        return Member::VALID;
     }
 }