skypiax: when trying to specify the use of an already busy interface for…

skypiax: when trying to specify the use of an already busy interface for originating an outbound call, return SWITCH_CAUSE_NORMAL_CIRCUIT_CONGESTION instead of DESTINATION_OUT_OF_ORDER. Like in openzap. Would be better to return SWITCH_CAUSE_REQUESTED_CHAN_UNAVAIL ???

git-svn-id: http://svn.freeswitch.org/svn/freeswitch/trunk@16893 d0543943-73ff-0310-b7d9-9358b9ac24b2

src/mod/endpoints/mod_skypiax/mod_skypiax.c

@@ -1048,7 +1048,7 @@ static switch_call_cause_t channel_outgoing_channel(switch_core_session_t *sessi
 						DEBUGA_SKYPE("1 SESSION_DESTROY %s\n", SKYPIAX_P_LOG, switch_core_session_get_uuid(*new_session));
 						switch_core_session_destroy(new_session);
 						switch_mutex_unlock(globals.mutex);
-						return SWITCH_CAUSE_DESTINATION_OUT_OF_ORDER;
+						return SWITCH_CAUSE_NORMAL_CIRCUIT_CONGESTION;
 					}
 
 					DEBUGA_SKYPE("globals.SKYPIAX_INTERFACES[%d].name=|||%s|||?\n", SKYPIAX_P_LOG, i, globals.SKYPIAX_INTERFACES[i].name);