nua: process response to CANCEL sent by nua_bye() with process_response_to_cancel()
nua: process response to CANCEL sent by nua_bye() with process_response_to_cancel()

This is a patch submitted by Colin Whittaker.

darcs-hash:20061025080357-65a35-c06261219bbf89a1a160933ed138690603fc92fd.gz

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