qt: Remove QSignalMapper from RPCConsole

The QSignalMapper class is obsolete since Qt 5.10.

Author: hebasto

src/qt/rpcconsole.cpp

@@ -34,7 +34,6 @@
 #include <QMessageBox>
 #include <QScrollBar>
 #include <QSettings>
-#include <QSignalMapper>
 #include <QTime>
 #include <QTimer>
 #include <QStringList>
@@ -603,19 +602,10 @@ void RPCConsole::setClientModel(ClientModel *model)
         peersTableContextMenu->addAction(banAction7d);
         peersTableContextMenu->addAction(banAction365d);
 
-        // Add a signal mapping to allow dynamic context menu arguments.
-        // We need to use int (instead of int64_t), because signal mapper only supports
-        // int or objects, which is okay because max bantime (1 year) is < int_max.
-        QSignalMapper* signalMapper = new QSignalMapper(this);
-        signalMapper->setMapping(banAction1h, 60*60);
-        signalMapper->setMapping(banAction24h, 60*60*24);
-        signalMapper->setMapping(banAction7d, 60*60*24*7);
-        signalMapper->setMapping(banAction365d, 60*60*24*365);
-        connect(banAction1h, &QAction::triggered, signalMapper, static_cast<void (QSignalMapper::*)()>(&QSignalMapper::map));
-        connect(banAction24h, &QAction::triggered, signalMapper, static_cast<void (QSignalMapper::*)()>(&QSignalMapper::map));
-        connect(banAction7d, &QAction::triggered, signalMapper, static_cast<void (QSignalMapper::*)()>(&QSignalMapper::map));
-        connect(banAction365d, &QAction::triggered, signalMapper, static_cast<void (QSignalMapper::*)()>(&QSignalMapper::map));
-        connect(signalMapper, static_cast<void (QSignalMapper::*)(int)>(&QSignalMapper::mapped), this, &RPCConsole::banSelectedNode);
+        connect(banAction1h, &QAction::triggered, [this] { banSelectedNode(60 * 60); });
+        connect(banAction24h, &QAction::triggered, [this] { banSelectedNode(60 * 60 * 24); });
+        connect(banAction7d, &QAction::triggered, [this] { banSelectedNode(60 * 60 * 24 * 7); });
+        connect(banAction365d, &QAction::triggered, [this] { banSelectedNode(60 * 60 * 24 * 365); });
 
         // peer table context menu signals
         connect(ui->peerWidget, &QTableView::customContextMenuRequested, this, &RPCConsole::showPeersTableContextMenu);