Ticket #29217: 29217.patch

src/wp-includes/pluggable.php

@@ -1707 +1707 @@
                 $uid = apply_filters( 'nonce_user_logged_out', $uid, $action );
         }
 
+        if ( empty( $nonce ) ) {
+                return false;
+        }
+
         $token = wp_get_session_token();
         $i = wp_nonce_tick();