[Wine] I want to help fix wine, but how do I go about fixing a bug?

[Ron]

I want to help fix wine, but how do I go about fixing a bug?

I tried looking through the development section, but I wasn't sure how to do it. If say I found that when I ran a program under Wine, it showed me a certain error which was: 

> 
> fixme:bitblt:X11DRV_ClientSideDIBCopy potential optimization: pixel format conversion
> 


Then what is a quick summary of how to fix it? Thank you.