message: return correct name
diff: @@ -194,7 +194,15 @@ DoubleTreeWidget::DoubleTreeWidget(const git::Repository &repo, QWidget *parent)
  }
  QString DoubleTreeWidget::selectedFile() const {
  + QModelIndexList indexes = stagedFiles->selectionModel()->selectedIndexes();
  + if (!indexes.isEmpty()) {
  + return indexes.first().data(Qt::DisplayRole).toString();
  + }
  + indexes = unstagedFiles->selectionModel()->selectedIndexes();
  + if (!indexes.isEmpty()) {
  + return indexes.first().data(Qt::DisplayRole).toString();
  + }
  return "";
  }
  