-NickEditDlg::NickEditDlg(const QString &old, const QStringList &exist, QWidget *parent)
- : QDialog(parent), oldNick(old), existing(exist)
+NickEditDlg::NickEditDlg(const QString &old, QStringList exist, QWidget *parent)
+ : QDialog(parent), oldNick(old), existing(std::move(exist))