bug#7716: 23.2.91; Pretest Windows binary doesn't support PNG images

[Eli Zaretskii]

> From: "Drew Adams" <drew.adams@oracle.com>
> Cc: <7716@debbugs.gnu.org>, <sean.sieger@gmail.com>
> Date: Fri, 24 Dec 2010 08:47:43 -0800
> 
> I see the same problem in both 90 and 91 pretests (and the latest Windows
> binary, from 12/20).

Something's not right with your image DLLs, then.  I think.  I'm quite
sure that the 90 binary worked for me.