MT#55283 fix unsubscribe/update order

The subscriptions must be removed first and the update function must be
called second. Otherwise unsubscribe doesn't have any immediate effect.

Closes #1851

Change-Id: Iccc449357f7136b863ba2d633b24942dbe87d767
(cherry picked from commit 2d18d6189b)
(cherry picked from commit bd5f9f9f0f)
(cherry picked from commit b58e8ea1ee)
(cherry picked from commit 547e0ab9fd)

daemon/call.c

@@ -3457,7 +3457,6 @@ int monologue_unsubscribe(struct call_monologue *dst_ml, sdp_ng_flags *flags) {
 			continue;
 
 		__media_unconfirm(media, "media unsubscribe");
-		__update_init_subscribers(media, NULL, NULL, flags->opmode);
 
 		/* TODO: should we care about subscribers as well? */
 		for (__auto_type l = media->media_subscriptions.head; l; )
@@ -3470,11 +3469,13 @@ int monologue_unsubscribe(struct call_monologue *dst_ml, sdp_ng_flags *flags) {
 				continue;
 
 			__media_unconfirm(src_media, "media unsubscribe");
-			__update_init_subscribers(src_media, NULL, NULL, flags->opmode);
 			__unsubscribe_media_link(media, l);
+			__update_init_subscribers(src_media, NULL, NULL, flags->opmode);
 
 			l = next;
 		}
+
+		__update_init_subscribers(media, NULL, NULL, flags->opmode);
 	}
 
 	return 0;