diff -r 3d4e9c994f10 -r a86126ab1dd4 wp/wp-includes/SimplePie/Cache/File.php
--- a/wp/wp-includes/SimplePie/Cache/File.php	Tue Oct 22 16:11:46 2019 +0200
+++ b/wp/wp-includes/SimplePie/Cache/File.php	Tue Dec 15 13:49:49 2020 +0100
@@ -5,7 +5,7 @@
  * A PHP-Based RSS and Atom Feed Framework.
  * Takes the hard work out of managing a complete RSS/Atom solution.
  *
- * Copyright (c) 2004-2012, Ryan Parman, Geoffrey Sneddon, Ryan McCue, and contributors
+ * Copyright (c) 2004-2016, Ryan Parman, Sam Sneddon, Ryan McCue, and contributors
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without modification, are
@@ -33,10 +33,9 @@
  * POSSIBILITY OF SUCH DAMAGE.
  *
  * @package SimplePie
- * @version 1.3.1
- * @copyright 2004-2012 Ryan Parman, Geoffrey Sneddon, Ryan McCue
+ * @copyright 2004-2016 Ryan Parman, Sam Sneddon, Ryan McCue
  * @author Ryan Parman
- * @author Geoffrey Sneddon
+ * @author Sam Sneddon
  * @author Ryan McCue
  * @link http://simplepie.org/ SimplePie
  * @license http://www.opensource.org/licenses/bsd-license.php BSD License
@@ -102,7 +101,7 @@
 	 */
 	public function save($data)
 	{
-		if (file_exists($this->name) && is_writeable($this->name) || file_exists($this->location) && is_writeable($this->location))
+		if (file_exists($this->name) && is_writable($this->name) || file_exists($this->location) && is_writable($this->location))
 		{
 			if ($data instanceof SimplePie)
 			{
@@ -136,11 +135,7 @@
 	 */
 	public function mtime()
 	{
-		if (file_exists($this->name))
-		{
-			return filemtime($this->name);
-		}
-		return false;
+		return @filemtime($this->name);
 	}
 
 	/**
@@ -150,11 +145,7 @@
 	 */
 	public function touch()
 	{
-		if (file_exists($this->name))
-		{
-			return touch($this->name);
-		}
-		return false;
+		return @touch($this->name);
 	}
 
 	/**