Merge #17943: qt, refactor: Remove never used default parameter

1a53b0d refactor: Simplify connection syntax (Hennadii Stepanov)
7d0a8f4 refactor: Remove never used default parameter (Hennadii Stepanov)

Pull request description:

  In `BitcoinGUI::message()` slot the `bool* ret = nullptr` parameter is never used.

  This PR removes it and simplifies connections syntax by replacing lambdas with the `&BitcoinGUI::message` slot.

ACKs for top commit:
  promag:
    Code review ACK 1a53b0d.
  Sjors:
    Tested ACK 1a53b0d
  Empact:
    Code review ACK bitcoin/bitcoin@1a53b0d

Tree-SHA512: e287c3218d31a387338d50da3de79c27e8691829449c3a75a2f75bb1c680bd81eb9de43e4dd3646560a422d4a45c84debfce9783c4376b50aa5cde491f300688

Author: fanquake

src/qt/bitcoin.cpp

@@ -361,9 +361,7 @@ void BitcoinApplication::initializeResult(bool success)
         if (paymentServer) {
             connect(paymentServer, &PaymentServer::receivedPaymentRequest, window, &BitcoinGUI::handlePaymentRequest);
             connect(window, &BitcoinGUI::receivedURI, paymentServer, &PaymentServer::handleURIOrFile);
-            connect(paymentServer, &PaymentServer::message, [this](const QString& title, const QString& message, unsigned int style) {
-                window->message(title, message, style);
-            });
+            connect(paymentServer, &PaymentServer::message, window, &BitcoinGUI::message);
             QTimer::singleShot(100, paymentServer, &PaymentServer::uiReady);
         }
 #endif

src/qt/bitcoingui.cpp

@@ -564,9 +564,7 @@ void BitcoinGUI::setClientModel(ClientModel *_clientModel)
         connect(_clientModel, &ClientModel::numBlocksChanged, this, &BitcoinGUI::setNumBlocks);
 
         // Receive and report messages from client model
-        connect(_clientModel, &ClientModel::message, [this](const QString &title, const QString &message, unsigned int style){
-            this->message(title, message, style);
-        });
+        connect(_clientModel, &ClientModel::message, this, &BitcoinGUI::message);
 
         // Show progress dialog
         connect(_clientModel, &ClientModel::showProgress, this, &BitcoinGUI::showProgress);
@@ -1027,7 +1025,7 @@ void BitcoinGUI::setNumBlocks(int count, const QDateTime& blockDate, double nVer
     progressBar->setToolTip(tooltip);
 }
 
-void BitcoinGUI::message(const QString& title, QString message, unsigned int style, bool* ret)
+void BitcoinGUI::message(const QString& title, QString message, unsigned int style)
 {
     // Default title. On macOS, the window title is ignored (as required by the macOS Guidelines).
     QString strTitle{PACKAGE_NAME};
@@ -1081,9 +1079,7 @@ void BitcoinGUI::message(const QString& title, QString message, unsigned int sty
         showNormalIfMinimized();
         QMessageBox mBox(static_cast<QMessageBox::Icon>(nMBoxIcon), strTitle, message, buttons, this);
         mBox.setTextFormat(Qt::PlainText);
-        int r = mBox.exec();
-        if (ret != nullptr)
-            *ret = r == QMessageBox::Ok;
+        mBox.exec();
     } else {
         notificator->notify(static_cast<Notificator::Class>(nNotifyIcon), strTitle, message);
     }

src/qt/bitcoingui.h

@@ -219,9 +219,8 @@ public Q_SLOTS:
        @param[in] message   the displayed text
        @param[in] style     modality and style definitions (icon and used buttons - buttons only for message boxes)
                             @see CClientUIInterface::MessageBoxFlags
-       @param[in] ret       pointer to a bool that will be modified to whether Ok was clicked (modal only)
     */
-    void message(const QString& title, QString message, unsigned int style, bool* ret = nullptr);
+    void message(const QString& title, QString message, unsigned int style);
 
 #ifdef ENABLE_WALLET
     void setCurrentWallet(WalletModel* wallet_model);

src/qt/walletview.cpp

@@ -97,9 +97,7 @@ void WalletView::setBitcoinGUI(BitcoinGUI *gui)
         connect(sendCoinsPage, &SendCoinsDialog::coinsSent, gui, &BitcoinGUI::gotoHistoryPage);
 
         // Receive and report messages
-        connect(this, &WalletView::message, [gui](const QString &title, const QString &message, unsigned int style) {
-            gui->message(title, message, style);
-        });
+        connect(this, &WalletView::message, gui, &BitcoinGUI::message);
 
         // Pass through encryption status changed signals
         connect(this, &WalletView::encryptionStatusChanged, gui, &BitcoinGUI::updateWalletStatus);