Description:
------------
Results of tidy_get_output() sometimes have garbage 
characters appended to the end, and will cut off at any 
embedded null bytes in the output.

The extra bytes seem to come up mainly when using the 
show_body_only and wrap options in combination, though 
there may be other triggers too.

Null bytes may become embedded in text containing � 
or &#0 (without ;!) in the source if a charset option is 
given.

Tested on Ubuntu Linux (Hoary/x86). PHP 4.3.10 and tidy/
libtidy snapshot 20040811-2 from the Ubuntu-provided 
packages.

Tidy extension 1.1 downloaded from PECL site and 
installed via PEAR.


Reproduce code:
---------------
I've put a sample program and suggested patch at:

http://leuksman.com/pages/bugs/tidy


Expected result:
----------------
The first test should always return a clean four lines, 
256 bytes like this:
string(256) "******* ******* ******* ******* ******* 
******* ******* *******
******* ******* ******* ******* ******* ******* ******* 
*******
******* ******* ******* ******* ******* ******* ******* 
*******
******* ******* ******* ******* ******* ******* ******* 
*******
"

Second test should show:
string(56) "<p>This is a null:  Following text should 
stay...</p>
"


Actual result:
--------------
string(261) "******* ******* ******* ******* ******* 
******* ******* *******
******* ******* ******* ******* ******* ******* ******* 
*******
******* ******* ******* ******* ******* ******* ******* 
*******
******* ******* ******* ******* ******* ******* ******* 
*******
 ***
"

string(19) "<p>This is a null: "