From 796eb1c8748a92171798bbeeaa8b5c310a3c1c1f Mon Sep 17 00:00:00 2001
From: Hypolite Petovan <mrpetovan@gmail.com>
Date: Wed, 11 Jul 2018 22:58:52 -0400
Subject: [PATCH] Fix undefined index in mod/settings

---
 mod/settings.php | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/mod/settings.php b/mod/settings.php
index 34e9ce41ec..ff969d65eb 100644
--- a/mod/settings.php
+++ b/mod/settings.php
@@ -26,14 +26,12 @@ use Friendica\Util\Temporal;
 function get_theme_config_file($theme)
 {
 	$a = get_app();
-	if (!empty($a->theme_info['extends'])) {
-		$base_theme = $a->theme_info['extends'];
-	}
+	$base_theme = defaults($a->theme_info, 'extends');
 
 	if (file_exists("view/theme/$theme/config.php")) {
 		return "view/theme/$theme/config.php";
 	}
-	if (!empty($base_theme) && file_exists("view/theme/$base_theme/config.php")) {
+	if ($base_theme && file_exists("view/theme/$base_theme/config.php")) {
 		return "view/theme/$base_theme/config.php";
 	}
 	return null;