Fix foreign-slot-set compiler macro expansion
Fix foreign-slot-set compiler macro expansion

3b/cffi,dkochmanski/cffi,dkochmanski/cffi,3b/cffi,mcna/cffi,stassats/cffi,cffi/cffi,attila-lendvai/cffi,dkochmanski/cffi,cffi/cffi,attila-lendvai/cffi,3b/cffi,mcna/cffi,stassats/cffi,cffi/cffi,stassats/cffi