no longer store server transaction terminated by the 491. Purpose is to avoid...

no longer store server transaction terminated by the 491. Purpose is to avoid hiding an existing pending transaction.

src/dialog.c

@@ -332,17 +332,22 @@ int belle_sip_dialog_update(belle_sip_dialog_t *obj, belle_sip_transaction_t* tr
 
 	belle_sip_message("Dialog [%p]: now updated by transaction [%p].",obj, transaction);
 	
-	belle_sip_object_ref(transaction);
-	if (obj->last_transaction) belle_sip_object_unref(obj->last_transaction);
-	obj->last_transaction=transaction;
+	if (resp)
+			code=belle_sip_response_get_status_code(resp);
 	
+	if (as_uas && code == 491) { /**/
+		belle_sip_message("Dialog [%p]: don't update last transaction by transaction [%p].",obj, transaction);
+	} else {
+		belle_sip_object_ref(transaction);
+		if (obj->last_transaction) belle_sip_object_unref(obj->last_transaction);
+		obj->last_transaction=transaction;
+	}
 	if (!as_uas){
 		belle_sip_header_privacy_t *privacy_header=belle_sip_message_get_header_by_type(req,belle_sip_header_privacy_t);
 		SET_OBJECT_PROPERTY(obj,privacy,privacy_header);
 	}
 	
-	if (resp)
-		code=belle_sip_response_get_status_code(resp);
+
 
 
 	/*first update local/remote cseq*/