From 825edbbf91276e5e0843be15b592da090fbc43d4 Mon Sep 17 00:00:00 2001
From: liujunlve <liujunlve@henhaoji.com>
Date: Fri, 30 Jul 2021 15:32:56 +0800
Subject: [PATCH] Fix #509 add support for Internet Explorer 8

---
 src/ua-parser.js | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/ua-parser.js b/src/ua-parser.js
index 2a6236707..3581c9a33 100755
--- a/src/ua-parser.js
+++ b/src/ua-parser.js
@@ -114,6 +114,7 @@
                 // try matching uastring with regexes
                 while (j < regex.length && !matches) {
 
+                    if (!regex[j]) { break; }
                     matches = regex[j++].exec(ua);
 
                     if (!!matches) {