From dd315dbd2179125e5eaa73f007d296f9e143645d Mon Sep 17 00:00:00 2001
From: Mikael Roos <mikael.t.h.roos@gmail.com>
Date: Tue, 24 May 2022 16:33:08 +0200
Subject: [PATCH] Fix deprecated for PHP 8.1

---
 webroot/img.php | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/webroot/img.php b/webroot/img.php
index 9f4a56b..75d3509 100644
--- a/webroot/img.php
+++ b/webroot/img.php
@@ -186,7 +186,7 @@ $hotlinkingWhitelist = getConfig('hotlinking_whitelist', array());
 
 $serverName  = isset($_SERVER['SERVER_NAME']) ? $_SERVER['SERVER_NAME'] : null;
 $referer     = isset($_SERVER['HTTP_REFERER']) ? $_SERVER['HTTP_REFERER'] : null;
-$refererHost = parse_url($referer, PHP_URL_HOST);
+$refererHost = parse_url($referer ?? "", PHP_URL_HOST);
 
 if (!$allowHotlinking) {
     if ($passwordMatch) {
@@ -323,7 +323,7 @@ $srcImage = urldecode(get('src'))
     or errorPage('Must set src-attribute.', 404);
 
 // Get settings for src-alt as backup image
-$srcAltImage = urldecode(get('src-alt', null));
+$srcAltImage = urldecode(get('src-alt', ""));
 $srcAltConfig = getConfig('src_alt', null);
 if (empty($srcAltImage)) {
     $srcAltImage = $srcAltConfig;