diff -r d8a8807227e4 -r d255fe9cd479 wp/wp-includes/pluggable.php
--- a/wp/wp-includes/pluggable.php	Tue Oct 15 11:56:20 2019 +0200
+++ b/wp/wp-includes/pluggable.php	Tue Oct 15 15:48:13 2019 +0200
@@ -1092,7 +1092,7 @@
 	 *                   0-12 hours ago, 2 if the nonce is valid and generated between 12-24 hours ago.
 	 */
 	function check_admin_referer( $action = -1, $query_arg = '_wpnonce' ) {
-		if ( -1 == $action ) {
+		if ( -1 === $action ) {
 			_doing_it_wrong( __FUNCTION__, __( 'You should specify a nonce action to be verified by using the first parameter.' ), '3.2.0' );
 		}
 
@@ -1111,7 +1111,7 @@
 		 */
 		do_action( 'check_admin_referer', $action, $result );
 
-		if ( ! $result && ! ( -1 == $action && strpos( $referer, $adminurl ) === 0 ) ) {
+		if ( ! $result && ! ( -1 === $action && strpos( $referer, $adminurl ) === 0 ) ) {
 			wp_nonce_ays( $action );
 			die();
 		}
@@ -1400,6 +1400,7 @@
 			$path = '';
 			if ( ! empty( $_SERVER['REQUEST_URI'] ) ) {
 				$path = dirname( parse_url( 'http://placeholder' . $_SERVER['REQUEST_URI'], PHP_URL_PATH ) . '?' );
+				$path = wp_normalize_path( $path );
 			}
 			$location = '/' . ltrim( $path . '/', '/' ) . $location;
 		}