[Bug 31029] TrackMania United Forever: Images not show properly

http://bugs.winehq.org/show_bug.cgi?id=31029

--- Comment #10 from Dmitry Timoshkov  2012-06-27 11:19:02 CDT ---
(In reply to comment #9)
> If a preferred vendor is specified, the loop runs first trying only decoders
> from the preferred vendor. If that fails, the loop runs again trying all
> decoders. The first decoder to successfully initialize is immediately returned.

Then I'd factor out the decoder search into a separate helper to avoid
a needless goto:

decoder = find_decoder(preferred_vendor, stream);
if (!decoder)
    decoder = find_decoder(NULL, stream);
return decoder;