Implement proper checks for new torrents

internal/dav/listing.go

@@ -47,8 +47,8 @@ func HandleListTorrents(directory string, t *torrent.TorrentManager, log *zap.Su
 		davDoc += "</d:multistatus>"
 		return &davDoc, nil
 	} else {
-		davDoc := resp.(*string)
-		return davDoc, nil
+		davDoc := resp.(string)
+		return &davDoc, nil
 	}
 }
 
@@ -77,7 +77,7 @@ func HandleListFiles(directory, torrentName string, t *torrent.TorrentManager, l
 		davDoc += "</d:multistatus>"
 		return &davDoc, nil
 	} else {
-		davDoc := resp.(*string)
-		return davDoc, nil
+		davDoc := resp.(string)
+		return &davDoc, nil
 	}
 }