fix unused variable warnings
fix unused variable warnings

dochang/cffi,akovalenko/cffi,kingcheez/cffi-cheez,akovalenko/cffi,stassats/cffi,dochang/cffi,3b/cffi,wesen/cffi,dkochmanski/cffi,wesen/cffi,cffi/cffi,dkochmanski/cffi,dochang/cffi,3b/cffi,attila-lendvai/cffi,stassats/cffi,wesen/cffi,marsijanin/cffi,marsijanin/cffi,cffi/cffi,mcna/cffi,dkochmanski/cffi,mcna/cffi,kingcheez/cffi-cheez,3b/cffi,akovalenko/cffi,stassats/cffi,kingcheez/cffi-cheez,attila-lendvai/cffi,cffi/cffi,marsijanin/cffi