Description:
------------
The script tidy/examples/dumpit5.php script is crashing on $tidy->root();

Reproduce code:
---------------
./sapi/cli/php ext/tidy/examples/dumpit5.php http://www.php.net

Expected result:
----------------
No crash.

Actual result:
--------------
#0  0x002a33b4 in tidy_add_default_properties (obj=0xf20b38, 
type=is_node) at /Users/adam/cvs/php-src/ext/tidy/tidy.c:715
715                             buf.bp[buf.size-1] = '\0';
(gdb) bt
#0  0x002a33b4 in tidy_add_default_properties (obj=0xf20b38, 
type=is_node) at /Users/adam/cvs/php-src/ext/tidy/tidy.c:715
#1  0x002a3e58 in php_tidy_create_node (ht=0, 
return_value=0xdc2478, this_ptr=0xdbdde8, return_value_used=1, 
node=is_root_node) at /Users/adam/cvs/php-src/ext/tidy/tidy.c:847
#2  0x002a70d8 in zif_tidy_get_root (ht=0, return_value=0xdc2478, 
this_ptr=0xdbdde8, return_value_used=1) at /Users/adam/cvs/php-src/
ext/tidy/tidy.c:1440
#3  0x00361ea4 in zend_do_fcall_common_helper 
(execute_data=0xbfffebf0, opline=0xdbc2b4, op_array=0xdbbdc8) at /
Users/adam/cvs/php-src/Zend/zend_execute.c:2699
#4  0x003626bc in zend_do_fcall_by_name_handler 
(execute_data=0xbfffebf0, opline=0xdbc2b4, op_array=0xdbbdc8) at /
Users/adam/cvs/php-src/Zend/zend_execute.c:2810
#5  0x0035c818 in execute (op_array=0xdbbdc8) at /Users/adam/cvs/
php-src/Zend/zend_execute.c:1391
#6  0x0032b9e0 in zend_execute_scripts (type=8, retval=0x0, 
file_count=3) at /Users/adam/cvs/php-src/Zend/zend.c:1058
#7  0x002ca1b4 in php_execute_script (primary_file=0xbffff660) at /
Users/adam/cvs/php-src/main/main.c:1630
#8  0x0036f5c0 in main (argc=3, argv=0xbffffbc8) at /Users/adam/cvs/
php-src/sapi/cli/php_cli.c:943