From 8cd74081f706d5f2b1986475adbbb90632605944 Mon Sep 17 00:00:00 2001
From: Amir Sarabadani <ladsgroup@gmail.com>
Date: Mon, 12 Jun 2017 16:03:17 +0430
Subject: [PATCH] Do not try to parse empty argument in getErrorsOrWarnings in
 OOUI

Bug: T167644
Change-Id: I0dcb9bd51ad0cecbdab868fed056b4077d1c9fa8
---
 includes/htmlform/OOUIHTMLForm.php | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/includes/htmlform/OOUIHTMLForm.php b/includes/htmlform/OOUIHTMLForm.php
index 6650321633..ed99802994 100644
--- a/includes/htmlform/OOUIHTMLForm.php
+++ b/includes/htmlform/OOUIHTMLForm.php
@@ -191,6 +191,10 @@ class OOUIHTMLForm extends HTMLForm {
 	 * @return string
 	 */
 	public function getErrorsOrWarnings( $elements, $elementsType ) {
+		if ( $elements === '' ) {
+			return '';
+		}
+
 		if ( !in_array( $elementsType, [ 'error', 'warning' ], true ) ) {
 			throw new DomainException( $elementsType . ' is not a valid type.' );
 		}
-- 
2.20.1