Potential memory leak in QVersionNumber pointed out by clazy

  const QStringList versions{"1.0", "2.0", "3.0"};
    QVersionNumber vn(1, 0, 0);
    for (const auto &v : versions) {
        auto parsedVn = QVersionNumber::fromString(v);
        if (!parsedVn.isNull() && parsedVn > vn)
            vn = parsedVn;
    }