tst_qstandardpaths::testCustomRuntimeDirectory_data doesn't check for failures

    addRow("environment:file", [](QDir &d) {
        QString p = d.filePath("file");
        QFile f(p);
        f.open(QIODevice::WriteOnly);
        f.setPermissions(QFile::ReadOwner | QFile::WriteOwner);

        updateRuntimeDir(p);
        QTest::ignoreMessage(QtWarningMsg,
                             QString("QStandardPaths: runtime directory '%1' is not a directory, "
                                     "but a regular file permissions 0600 owned by UID %2 GID %3")
                             .arg(p).arg(getuid()).arg(getgid()).toLatin1());
        return fallbackXdgRuntimeDir();
    });