Another example: http://www.winehq.org/pipermail/wine-patches/2012-January/110398.html http://source.winehq.org/git/wine.git/commit/b1f04e23bf361e06d239e03693c904a597b9a32d I had added a redundant null check in both A and W paths. he simplified it by making just the W path handle the null