user32: Accept BI_BITFIELDS format for icons when creating icons

Wed Jan 23 13:26:14 CST 2013

Initial problem is that IPicture fails to create and icon from supplied 
buffer with CreateIconFromResourceEx() when compression type is set to 
BI_BITFIELDS.

It seems to me that it should work with existing code (and it does 
create HICON with this patch in fact) - looks like header size and image 
size calculation supports BI_BITFIELDS, cause similar code used in some 
gdi32 parts too for this compression type.

Anyway please let me know if this change is stupid for some reason.
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