[2/5] GDI: Test the "alpha" channel on compatible bitmaps (try 2)

Stefan Dösinger stefan at codeweavers.com
Thu Dec 13 17:48:03 CST 2007

The first patch missed a "bm.bmiHeader.biBitCount= 32" for some reason, so it 
tried to read a 24 bit value, which obviously didn't produce the same result 
as reading a 32 bit one: The 8 extra bits were unchanged, and remained set to 
0xde from the 0xdeadbeef that it written in before.
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