Disable test case for PHPC-431 until PHPC-1239 is resolved

Author: derickr

tests/standalone/manager-as-singleton.phpt

@@ -3,6 +3,7 @@ PHPC-431: Segfault when using Manager through singleton class
 --SKIPIF--
 <?php require __DIR__ . "/../utils/basic-skipif.inc"; ?>
 <?php skip_if_not_live(); ?>
+<?php skip_if_ssl(); /* Temporary, until PHPC-1239 is resolved */ ?>
 --FILE--
 <?php
 use MongoDB\Driver\Manager;