don't drop on ctx cancel (#3440)

cmd/downloader/downloader/downloader.go

@@ -267,12 +267,11 @@ func ResolveAbsentTorrents(ctx context.Context, torrentClient *torrent.Client, p
 
 	for _, t := range torrentClient.Torrents() {
 		select {
-		case <-ctx.Done():
-			t.Drop()
-			return ctx.Err()
 		case <-t.GotInfo():
 			mi := t.Metainfo()
-			_ = CreateTorrentFileIfNotExists(snapshotDir, t.Info(), &mi)
+			if err := CreateTorrentFileIfNotExists(snapshotDir, t.Info(), &mi); err != nil {
+				return err
+			}
 		}
 	}