Description:
------------
When using the new APC_UPLOAD_PROGRESS feature and
if you make a multi file upload_form and do not fill out all of the file fields then the
cancel_upload parameter get a value of 4 and the the whole upload is reported as:

Cancelled after 109300234 bytes

even if the upload actually was a success.



Reproduce code:
---------------
Download this source:
http://progphp.com/progress.phps

which I found at:
http://talks.php.net/show/torkey06/24

then change the upload_form so it have more than one upload
field.

I entered three fields like this:

<input type="file" name="test_file[]"/><br/>
<input type="file" name="test_file[]"/><br/>
<input type="file" name="test_file[]"/><br/>

Expected result:
----------------
I would like to see PHP, or the APC extension (do not know which one causes the error) not raise any errors when some of the file fields are not filled out.

Actual result:
--------------
cancel_upload parameter should get value of 0 and not 4.