update test

Author: devnexen

ext/fileinfo/tests/gh18267.phpt

@@ -5,7 +5,7 @@ fileinfo
 --FILE--
 <?php
 $cls = new finfo();
-$f = fopen("test", "w+");
+$f = fopen("gh18267", "w+");
 try {
     $cls->file("test",FILEINFO_NONE, $f);
 } catch (\TypeError $e) {