[chora] problem when 0 is the name of a directory

[Chuck Hagenbuch]

Quoting Jon Parise <jon@csh.rit.edu>:

> >         while (($name = readdir($DIR)) != '') {
> 
> I usually prefer to use empty() for cases like this, but I don't know
> which method is better (in terms of performance or readability).

In this case, I think the preferred way to write it would be:

while (($name = readdir($DIR)) !== false)

empty would still return true on 0 as the directory name, and there's no way to 
apply empty() directly within the while loop above without adding an extra step.

I'll commit this in a moment - I just reproduced the revs problem, or something 
suspiciously similar, so I'm trying to track it down.

-chuck

--
Charles Hagenbuch, <chuck@horde.org>
"Live, from Washington, where the doctors were telling us what they did, and
 did not, do with Vice President Cheney." -Dan Rather