Advice regarding problem with SetFileInformationByHandle

[Greg]

Hello,

Myself and others have been trying to get Star Citizen to install in 
with wine. The first problem that we encountered is that when 
SetFileInformationByHandle is called with a class of 
FileIoPriorityHintInfo, it is hard coded to return 
ERROR_CALL_NOT_IMPLEMENTED.
This seems reasonable, however when the star citizen installer 
encounters that it exits - I'm guessing that it does not check GetLastError.
I have a patch developed by one of my in game org mates, that makes it 
return TRUE for this case without actually doing anything other than 
report a fixme.
The advice I am seeking is: Should I work up a test to go with it and 
submit this patch? I hesitate to do it because the current behavior 
seems accurate, and I would be asking far a special case just  for a 
game I want to play.  On the other hand, I don't think that there will 
ever be a unix equivalent, and that the OS has done as much as it can, 
so maybe it is not a "sin" after all?

I would be thankful for any guidance that can be provided.

Regards,

Greg.