message: Fix Delete Tag operation crash when there are no default remotes
diff: @@ -41,7 +41,7 @@ DeleteTagDialog::DeleteTagDialog(
  RepoView *view = RepoView::parentView(this);
  QString name = tag.name();
  - if (checkBox()->isChecked()) {
  + if (remote.isValid() && checkBox()->isChecked()) {
  git::Repository repo = view->repo();
  QString remoteName = remote.name();
  