backend-rdp: disconnect and free peers on compositor shutdown

Properly disconnect and free all RDP peers on compositor shutdown.
This makes sure that all events are disabled, which should avoid
any race conditions with pending events.

Signed-off-by: Stefan Agner <stefan@agner.ch>

libweston/backend-rdp/rdp.c

@@ -663,8 +663,17 @@ rdp_destroy(struct weston_compositor *ec)
 {
 	struct rdp_backend *b = to_rdp_backend(ec);
 	struct weston_head *base, *next;
+	struct rdp_peers_item *rdp_peer, *tmp;
 	int i;
 
+	wl_list_for_each_safe(rdp_peer, tmp, &b->output->peers, link) {
+		freerdp_peer* client = rdp_peer->peer;
+
+		client->Disconnect(client);
+		freerdp_peer_context_free(client);
+		freerdp_peer_free(client);
+	}
+
 	for (i = 0; i < MAX_FREERDP_FDS; i++)
 		if (b->listener_events[i])
 			wl_event_source_remove(b->listener_events[i]);