message: Fix variable shadowing in qt/receivefreezedialog.cpp
  qt/receivefreezedialog.cpp:30:50: warning: declaration shadows a field of 'ReceiveFreezeDialog' [-Wshadow]
  void ReceiveFreezeDialog::setModel(OptionsModel *model) { this->model = model; }
  ^
  ./qt/receivefreezedialog.h:42:19: note: previous declaration is here
  OptionsModel *model;
  ^
diff: @@ -27,7 +27,7 @@ ReceiveFreezeDialog::ReceiveFreezeDialog(QWidget *parent) : QDialog(parent), ui(
  }
  ReceiveFreezeDialog::~ReceiveFreezeDialog() { delete ui; }
  -void ReceiveFreezeDialog::setModel(OptionsModel *model) { this->model = model; }
  +void ReceiveFreezeDialog::setModel(OptionsModel *_model) { this->model = _model; }
  void ReceiveFreezeDialog::on_freezeDateTime_editingFinished()
  {
  if (ui->freezeDateTime->dateTime() > ui->freezeDateTime->minimumDateTime())
  