nua_session.c: always free BYE message created when session handle is destroyed
nua_session.c: always free BYE message created when session handle is destroyed

darcs-hash:20061130073354-65a35-af5fd19ed3d9fa7edae6e679a7be7457ef7020f0.gz

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