reg-proxy: fix osip transactions releasing procedure

* implement nict_trans_free function for checking list of osip_nict_transactions and releasing transactions in terminated state
* call nict_trans_free function in main loop
* transactions should not be released in message callback functions, so remove osip_transaction_free and osip_message_free from sip_cb_rcv2xx function
2 files changed
tree: 578fc4ecbbbde3a22131cf18e3ff1f45a52c6d65
  1. contrib/
  2. debian/
  3. etc/
  4. openbsc/
  5. .gitignore
  6. .gitreview
  7. .mailmap