Description:
------------
On PHP 5.5, when creating an archive with either ZIPARCHIVE::CREATE or 
ZIPARCHIVE::OVERWRITE, then adding a file and finally closing it, the close method 
returns false and the handle on the zip file is not closed.

So, if you try to chmod your zip file after that, it will fail.

Test script:
---------------
Here is a standard code that reproduce the bug :

if (file_exists('test.zip')) {
    unlink('test.zip');
}

$zip = new ZipArchive();

var_dump($zip->open('test.zip', ZIPARCHIVE::CREATE));
var_dump($zip->addFile(__FILE__, 'script.php'));
var_dump($zip->close());

var_dump(@chmod('test.zip', 0760));


The bug is visible on travis : https://travis-ci.org/romainneutron/travis-tests/jobs/6881256 with the PHPUnit script : https://github.com/romainneutron/travis-tests/blob/master/tests/Tests/ZipTest.php



Expected result:
----------------
bool(true)
bool(true)
bool(true)
bool(true)

Actual result:
--------------
bool(true)
bool(true)
bool(false)
bool(false)