QSslSocket::waitForEncrypted does not return immediately in case of errors

If the SSL handshake fails (e.g. when using unsupported protocols or ciphers), waitForEncrypted blocks instead of returning false immediately. For instance:

    QSslSocket s;
    s.setProtocol(QSsl::SslV2);
    s.connectToHostEncrypted("www.google.com", 443);
    bool ok = s.waitForEncrypted();