[skip ci] Mark one more curl test as xleak

Author: iluuu1994

ext/curl/tests/bug77535.phpt

@@ -2,6 +2,7 @@
 Bug #77535 (Invalid callback, h2 server push)
 --EXTENSIONS--
 curl
+--XLEAK--
 --SKIPIF--
 <?php
 include 'skipif-nocaddy.inc';