From 58b3cfb158077db359e1ab53758e06357ed9af5f Mon Sep 17 00:00:00 2001
From: Dag <me@dvikan.no>
Date: Sat, 25 Jan 2025 17:43:03 +0100
Subject: [PATCH] fix: drop extension requirement in feed icon url, fix #4416
 (#4421)

---
 formats/MrssFormat.php | 8 +-------
 1 file changed, 1 insertion(+), 7 deletions(-)

diff --git a/formats/MrssFormat.php b/formats/MrssFormat.php
index f7b11949..4066ec73 100644
--- a/formats/MrssFormat.php
+++ b/formats/MrssFormat.php
@@ -80,14 +80,8 @@ class MrssFormat extends FormatAbstract
                 $feedUrl = get_current_url();
                 $linkSelf->setAttribute('href', $feedUrl);
             } elseif ($feedKey === 'icon') {
-                $allowedIconExtensions = [
-                    '.gif',
-                    '.jpg',
-                    '.png',
-                    '.ico',
-                ];
                 $icon = $feedValue;
-                if ($icon && in_array(substr($icon, -4), $allowedIconExtensions)) {
+                if ($icon) {
                     $feedImage = $document->createElement('image');
                     $channel->appendChild($feedImage);
                     $iconUrl = $document->createElement('url');