When you open wallets with exotic names, i.e `🦹🏿‍♂️` (Emoji Version 11), via the "Open Wallet" menu, the opening wallet dialog never closes, even after the wallet has finished loading.

![screen shot 2019-02-21 at 2 34 06 pm](https://user-images.githubusercontent.com/863730/53148554-012d3180-35e6-11e9-8a94-62c5fb023d40.png)

{
#ifdef Q_OS_MAC
    
    appMenuBar = new QMenuBar();
#else
    
    appMenuBar = menuBar();
#endif
    
    QMenu *file = appMenuBar->addMenu(tr("&File"));
    if(walletFrame)
    {
        file->addAction(m_open_wallet_action);
        file->addAction(m_close_wallet_action);
        file->addSeparator();
        file->addAction(openAction);
        file->addAction(backupWalletAction);
        file->addAction(signMessageAction);
        file->addAction(verifyMessageAction);
        file->addSeparator();
    }
    file->addAction(quitAction);
    QMenu *settings = appMenuBar->addMenu(tr("&Settings"));
    if(walletFrame)
    {
        settings->addAction(encryptWalletAction);