message: Add code that went missing during the port from Core.
diff: const QString BitcoinGUI::DEFAULT_WALLET = "~Default";
  -BitcoinGUI::BitcoinGUI(const Config *_cfg, const PlatformStyle *platformStyle, const NetworkStyle *networkStyle, QWidget *parent) :
  +BitcoinGUI::BitcoinGUI(const Config *_cfg, const PlatformStyle *_platformStyle, const NetworkStyle *networkStyle, QWidget *parent) :
  QMainWindow(parent),
  clientModel(0),
  walletFrame(0),
  @@ -88,6 +88,7 @@ BitcoinGUI::BitcoinGUI(const Config *_cfg, const PlatformStyle *platformStyle, c
  receiveCoinsAction(0),
  receiveCoinsMenuAction(0),
  optionsAction(0),
  + unlimitedAction(0),
  toggleHideAction(0),
  encryptWalletAction(0),
  backupWalletAction(0),
  @@ -104,7 +105,8 @@ BitcoinGUI::BitcoinGUI(const Config *_cfg, const PlatformStyle *platformStyle, c
  modalOverlay(0),
  prevBlocks(0),
  spinnerFrame(0),
  - platformStyle(platformStyle)
  + platformStyle(_platformStyle),
  + cfg(_cfg)
  {
  GUIUtil::restoreWindowGeometry("nWindow", QSize(850, 550), this);
  