Ticket #19922: 19922.2.patch

wp-includes/class-http.php

@@ -419 +419 @@
                                 $cookies_header .= $cookie->getHeaderValue() . '; ';
                         }
                         $cookies_header = substr( $cookies_header, 0, -2 );
+                        $cookies_header = apply_filters( 'cookies_header', $cookies_header );
                         $r['headers']['cookie'] = $cookies_header;
                 }
         }