Fix for libical >= 4

Index: src/plugins/vcalendar/vcal_manager.c
--- src/plugins/vcalendar/vcal_manager.c.orig
+++ src/plugins/vcalendar/vcal_manager.c
@@ -402,7 +402,7 @@ gchar *vcal_manager_event_dump(VCalEvent *event, gbool
 		icalproperty_vanew_dtend((icaltime_from_string(event->dtend)), (void*)0));
 	if (event->recur && *(event->recur)) {
 		icalcomponent_add_property(ievent,
-			icalproperty_vanew_rrule((icalrecurrencetype_from_string(event->recur)), (void*)0));
+			icalproperty_vanew_rrule((icalrecurrencetype_new_from_string(event->recur)), (void*)0));
 	}
 	icalcomponent_add_property(ievent,
 		icalproperty_new_description(event->description));
@@ -690,7 +690,7 @@ gchar *vcal_manager_icalevent_dump(icalcomponent *even
 	icalcomponent *ievent = NULL;
 	int i = 0;
 
-	ievent = icalcomponent_new_clone(event);
+	ievent = icalcomponent_clone(event);
 
 	prop = icalcomponent_get_first_property(ievent, ICAL_UID_PROPERTY);
 	if (prop) {
