http://bugs.winehq.org/show_bug.cgi?id=15227
--- Comment #10 from Dylan Smith dylan.ah.smith@gmail.com 2008-09-11 14:06:18 --- (In reply to comment #9)
Unused variable warnings don't show up until -O2. You should always compile with -O2 before sending patches.
Thanks for advice. I actually just noticed this while reading through the warning options in the man pages for gcc. I'm glad to have figured that out.