add test

Author: devnexen

ext/spl/tests/gh20678.phpt

@@ -0,0 +1,14 @@
+--TEST--
+GH-20678 (resource created by GlobalIterator crashes when it is called with fclose())
+--CREDITS--
+chongwick
+--FILE--
+<?php
+$iter = new GlobIterator(__DIR__ . '/*.abcdefghij');
+$resources = get_resources();
+$resource = end($resources);
+fclose($resource);
+?>
+--EXPECTF--
+
+Warning: fclose(): %d is not a valid stream resource in %s on line %d