Configurator: Fix RPC port

src/Configurator.cpp

@@ -55,7 +55,7 @@ Configurator::Configurator(QWidget *parent) :
 
     ui->lineRPCBindPort->setText(config()->get(Config::RPCBindPort).toString());
     connect(ui->lineP2PBindPort, &QLineEdit::textChanged, [this](const QString &text){
-        this->setConfig(Config::P2PBindPort, text);
+        this->setConfig(Config::RPCBindPort, text);
     });
 
     ui->lineP2PBindIP->setText(config()->get(Config::P2PBindIP).toString());