Small optimization in PARSE-TYPE
Small optimization in PARSE-TYPE

Don't need to check for cycles (which starts off by consing up
a hash table) when not dealing with foreign-typedefs. Initial
patch courtesy of Greg Pfeil.

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