[Bug 6842] DrawFocusRect code correction

[Wine Bugs]

http://bugs.winehq.org/show_bug.cgi?id=6842

------- Additional Comments From [e-mail]  2006-07-12 12:51 -------
It would be easier to check your code if you sent it as a patch to wine-devel. 
We want to be able to see exactly what you've changed, so the patch format helps
with that.

Some initial feedback:
1. This looks like preprocessor abuse - choose one method (to cache or not to
cache) and propose that.
2. Don't use C++-style comments (no //).
3. You have comments on too many lines - one larger comment before the block
that explain the gist of it could replace a lot of these.