Description:
------------
Tidy version: snapshot from 24-Jun-2004 08:26, same issue also with older versions.
PHP version: 4.3.7

tidy_get_error_buffer() called after parsing without errors or warnings causes crash of PHP. On Linux, function returns error buffer from last parsing with errors.

Reproduce code:
---------------
<?php
tidy_parse_file("http://www.w3.org/");
echo tidy_get_error_buffer();
?>


Expected result:
----------------
Nothing.

Actual result:
--------------
Crash of PHP or error buffer from last parsing with errors.