diff -r c7c34916027a -r 177826044cd9 wp/wp-includes/class-wp-simplepie-sanitize-kses.php
--- a/wp/wp-includes/class-wp-simplepie-sanitize-kses.php	Mon Oct 14 18:06:33 2019 +0200
+++ b/wp/wp-includes/class-wp-simplepie-sanitize-kses.php	Mon Oct 14 18:28:13 2019 +0200
@@ -35,10 +35,9 @@
 	public function sanitize( $data, $type, $base = '' ) {
 		$data = trim( $data );
 		if ( $type & SIMPLEPIE_CONSTRUCT_MAYBE_HTML ) {
-			if (preg_match('/(&(#(x[0-9a-fA-F]+|[0-9]+)|[a-zA-Z0-9]+)|<\/[A-Za-z][^\x09\x0A\x0B\x0C\x0D\x20\x2F\x3E]*' . SIMPLEPIE_PCRE_HTML_ATTRIBUTE . '>)/', $data)) {
+			if ( preg_match( '/(&(#(x[0-9a-fA-F]+|[0-9]+)|[a-zA-Z0-9]+)|<\/[A-Za-z][^\x09\x0A\x0B\x0C\x0D\x20\x2F\x3E]*' . SIMPLEPIE_PCRE_HTML_ATTRIBUTE . '>)/', $data ) ) {
 				$type |= SIMPLEPIE_CONSTRUCT_HTML;
-			}
-			else {
+			} else {
 				$type |= SIMPLEPIE_CONSTRUCT_TEXT;
 			}
 		}