[Bug 33084] installer of QQ2013 Beta2: has black spot in the dialog

[wine-bugs at winehq.org]

http://bugs.winehq.org/show_bug.cgi?id=33084

--- Comment #6 from Dmitry Timoshkov <dmitry at baikal.ru> 2013-03-06 01:33:03 CST ---
(In reply to comment #3)
> The attached patch seems to fix it, but I don't really understand why. It seems
> to me that a fully transparent pixel is a fully transparent pixel, and it
> shouldn't matter what's in the RGB channels. Nor does the application seem to
> do anything weird to draw it.
> 
> And I can't think of an easy way to generate a test image for this.

I've sent a palette test for a PNG image with PLTE and tRNS chunks,
as expected the test doesn't pass under Wine. Feel free to send a fix.

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