message: Set icon to not staking when wallet is closed
diff: @@ -1496,11 +1496,11 @@ void BitcoinGUI::updateStakingIcon()
  if(m_node.shutdownRequested())
  return;
  - if (!walletFrame) {
  - return;
  - }
  - WalletView * const walletView = walletFrame->currentWalletView();
  + WalletView * const walletView = walletFrame ? walletFrame->currentWalletView() : 0;
  if (!walletView) {
  + // Not staking because wallet is closed
  + labelStakingIcon->setPixmap(QIcon(":/icons/staking_off").pixmap(STATUSBAR_ICONSIZE, STATUSBAR_ICONSIZE));
  + labelStakingIcon->setToolTip(tr("Not staking"));
  return;
  }
  WalletModel * const walletModel = walletView->getWalletModel();
  