nta.c: be consistent with maxsize and max_proceeding types
nta.c: be consistent with maxsize and max_proceeding types

Original patch by Mike Jerris

darcs-hash:20081219143853-db55f-3296453bf2890ebdc23fb86acdc1187d5fbea436.gz

unispeech/sofia-sip,BelledonneCommunications/sofia-sip,unispeech/sofia-sip,erdincay/sofia-sip,jart/sofia-sip,unispeech/sofia-sip,xhook/sofia-sip,jart/sofia-sip,xhook/sofia-sip,jart/sofia-sip,unispeech/sofia-sip,BelledonneCommunications/sofia-sip,xhook/sofia-sip,xhook/sofia-sip,erdincay/sofia-sip,BelledonneCommunications/sofia-sip,erdincay/sofia-sip,erdincay/sofia-sip,BelledonneCommunications/sofia-sip,xhook/sofia-sip