From 230919dd66aa577e840e6847f5a472b86dc1356a Mon Sep 17 00:00:00 2001
From: Michael Telatynski <7t3chguy@gmail.com>
Date: Fri, 26 Mar 2021 15:43:59 +0000
Subject: [PATCH] fix issue with injected styles exploding the theme engine

---
 src/theme.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/theme.js b/src/theme.js
index a413ae74af..40fa291cfc 100644
--- a/src/theme.js
+++ b/src/theme.js
@@ -176,7 +176,7 @@ export async function setTheme(theme) {
     for (let i = 0; (a = document.getElementsByTagName("link")[i]); i++) {
         const href = a.getAttribute("href");
         // shouldn't we be using the 'title' tag rather than the href?
-        const match = href.match(/^bundles\/.*\/theme-(.*)\.css$/);
+        const match = href && href.match(/^bundles\/.*\/theme-(.*)\.css$/);
         if (match) {
             styleElements[match[1]] = a;
         }