qt, refactor: Replace BitcoinGUI::macosDockIconActivated with a lambda

src/qt/bitcoingui.cpp

@@ -793,7 +793,10 @@ void BitcoinGUI::createTrayIconMenu()
 #else
     // Note: On macOS, the Dock icon is used to provide the tray's functionality.
     MacDockIconHandler *dockIconHandler = MacDockIconHandler::instance();
-    connect(dockIconHandler, &MacDockIconHandler::dockIconClicked, this, &BitcoinGUI::macosDockIconActivated);
+    connect(dockIconHandler, &MacDockIconHandler::dockIconClicked, [this] {
+        show();
+        activateWindow();
+    });
     trayIconMenu->setAsDockMenu();
 #endif
 
@@ -828,12 +831,6 @@ void BitcoinGUI::trayIconActivated(QSystemTrayIcon::ActivationReason reason)
         toggleHidden();
     }
 }
-#else
-void BitcoinGUI::macosDockIconActivated()
-{
-    show();
-    activateWindow();
-}
 #endif
 
 void BitcoinGUI::optionsClicked()

src/qt/bitcoingui.h

@@ -305,9 +305,6 @@ public Q_SLOTS:
 #ifndef Q_OS_MAC
     /** Handle tray icon clicked */
     void trayIconActivated(QSystemTrayIcon::ActivationReason reason);
-#else
-    /** Handle macOS Dock icon clicked */
-    void macosDockIconActivated();
 #endif
 
     /** Show window if hidden, unminimize when minimized, rise when obscured or show if hidden and fToggleHidden is true */