--- a/wp/wp-includes/SimplePie/Locator.php	Tue Dec 15 15:52:01 2020 +0100
+++ b/wp/wp-includes/SimplePie/Locator.php	Wed Sep 21 18:19:35 2022 +0200
@@ -94,7 +94,7 @@
 		$this->registry = $registry;
 	}
 
-	public function find($type = SIMPLEPIE_LOCATOR_ALL, &$working)
+	public function find($type = SIMPLEPIE_LOCATOR_ALL, &$working = null)
 	{
 		if ($this->is_feed($this->file))
 		{