From 18bdde00e616caa3234fe977a83ded103b7517d3 Mon Sep 17 00:00:00 2001
From: Marius Burkard <m.burkard@pixcept.de>
Date: Wed, 16 Sep 2020 16:30:47 +0200
Subject: [PATCH] - fixed using empty regex

---
 interface/lib/classes/validate_domain.inc.php | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/interface/lib/classes/validate_domain.inc.php b/interface/lib/classes/validate_domain.inc.php
index d8c87e09f..3555135ea 100644
--- a/interface/lib/classes/validate_domain.inc.php
+++ b/interface/lib/classes/validate_domain.inc.php
@@ -135,6 +135,9 @@ class validate_domain {
 					foreach($directives as $directive) {
 						$directive = trim($directive);
 						foreach($regex as $r) {
+							if(trim($r) == '') {
+								continue;
+							}
 							if(preg_match(trim($r),$directive)) {
 								$blocked = true;
 								$blocked_line .= $directive.'<br />';
-- 
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