Additional fixes on link checks

internal/http/listing.go

@@ -96,7 +96,7 @@ func handleSingleTorrent(requestPath string, t *torrent.TorrentManager) (*string
 	sort.Strings(filenames)
 	for _, filename := range filenames {
 		file, _ := tor.SelectedFiles.Get(filename)
-		if file == nil || file.Link == "" {
+		if file == nil || !strings.HasPrefix(file.Link, "http") {
 			// will be caught by torrent manager's repairAll
 			// just skip it for now
 			continue