clear store error in responseHook if ErrResourceDoesNotExist appear

middleware/hooks.go

@@ -50,7 +50,7 @@ func (h *swarmInteractionHook) HandleAnnounce(ctx context.Context, req *bittorre
 		err = h.store.GraduateLeecher(req.InfoHash, req.Peer)
 		return ctx, err
 	case req.Left == 0:
-		// Completed events will also have Key == 0, but by making this
+		// Completed events will also have Left == 0, but by making this
 		// an extra case we can treat "old" seeders differently from
 		// graduating leechers. (Calling PutSeeder is probably faster
 		// than calling GraduateLeecher.)
@@ -110,6 +110,7 @@ func (h *responseHook) appendPeers(req *bittorrent.AnnounceRequest, resp *bittor
 	if err != nil && !errors.Is(err, storage.ErrResourceDoesNotExist) {
 		return err
 	}
+	err = nil
 
 	// Some clients expect a minimum of their own peer representation returned to
 	// them if they are the only peer in a swarm.

storage/memory/storage.go

@@ -611,7 +611,9 @@ func (ps *store) collectGarbage(cutoff time.Time) error {
 func (ps *store) Stop() stop.Result {
 	c := make(stop.Channel)
 	go func() {
-		close(ps.closed)
+		if ps.closed != nil {
+			close(ps.closed)
+		}
 		ps.wg.Wait()
 
 		// Explicitly deallocate our storage.