fix test

Author: devnexen

ext/zend_test/tests/gh17797.phpt

@@ -20,7 +20,7 @@ Warning: require(sumfile.php): Failed to open stream: No such file or directory
 require("sumfile.php");
 ?> on line %d
 
-Fatal error: Uncaught Error: Failed opening required 'sumfile.php' (include_path='.:') in <?php
+Fatal error: Uncaught Error: Failed opening required 'sumfile.php' (include_path='.%s') in <?php
 require("sumfile.php");
 ?>:%d
 Stack trace: