fixed a notice in add users to admin platform

main/admin/dashboard_add_users_to_user.php

@@ -51,7 +51,7 @@ if (UserManager::is_admin($user_id)) {
 }
 
 $add_type = 'multiple';
-if(isset($_GET['add_type']) && $_GET['add_type']!='') {
+if (isset($_GET['add_type']) && $_GET['add_type']!='') {
 	$add_type = Security::remove_XSS($_REQUEST['add_type']);
 }
 
@@ -327,6 +327,8 @@ echo Display::page_header(
         null, $size = 'h3'
 );
 
+$assigned_users_to_hrm = array();
+
 switch ($userStatus) {
     case DRH:
         $assigned_users_to_hrm = UserManager::get_users_followed_by_drh($user_id);