ftmod_libpri: ignore missing call_data in on_hangup() and use the call handle…

ftmod_libpri: ignore missing call_data in on_hangup() and use the call handle passed in the pevent structure (still needs more love...)
Signed-off-by: Stefan Knoblich <s.knoblich@axsentis.de>

libs/freetdm/src/ftmod/ftmod_libpri/ftmod_libpri.c

@@ -854,7 +854,7 @@ static int on_hangup(lpwrap_pri_t *spri, lpwrap_pri_event_t event_type, pri_even
 {
 	ftdm_span_t *span = spri->span;
 	ftdm_channel_t *chan = ftdm_span_get_channel(span, pevent->hangup.channel);
-	q931_call *call = NULL;
+/*	q931_call *call = NULL; */
 
 	if (!chan) {
 		ftdm_log(FTDM_LOG_CRIT, "-- Hangup on channel %d:%d %s but it's not in use?\n", ftdm_span_get_id(spri->span), pevent->hangup.channel);
@@ -868,22 +868,25 @@ static int on_hangup(lpwrap_pri_t *spri, lpwrap_pri_event_t event_type, pri_even
 		goto done;
 	}
 
+/*
+ * Make sure we can really tear-down a call, simply ignore the missing call_data and
+ * use the call handle from the event
+ *
 	if (!chan->call_data) {
 		ftdm_log_chan(chan, FTDM_LOG_DEBUG, "Ignoring remote hangup in state %s with no call data\n", ftdm_channel_get_state_str(chan));
 		goto done;
 	}
 
 	call = (q931_call *)chan->call_data;
-
+*/
 	ftdm_log(FTDM_LOG_DEBUG, "-- Hangup on channel %d:%d\n", ftdm_span_get_id(spri->span), pevent->hangup.channel);
 
-	pri_release(spri->pri, call, 0);
-	pri_destroycall(spri->pri, call);
+	pri_release(spri->pri, pevent->hangup.call, 0);
+	pri_destroycall(spri->pri, pevent->hangup.call);
 
 	chan->caller_data.hangup_cause = pevent->hangup.cause;
 	chan->call_data = NULL;
 	ftdm_set_state_locked(chan, FTDM_CHANNEL_STATE_TERMINATING);
-
 done:
 	ftdm_channel_unlock(chan);
 	return 0;