Fix gcc errors

plugins/feature/gs232controller/gamepadinputcontroller.cpp

@@ -97,7 +97,7 @@ void GamepadInputController::configure(InputControllerSettings *settings)
 
 void GamepadInputController::configurationDialogClosed()
 {
-    m_configurationDialog = false;
+    m_configurationDialog = nullptr;
     emit configurationComplete();
 }
 

plugins/feature/gs232controller/inputcontroller.h

@@ -49,7 +49,7 @@ public:
     double getAxisCalibratedValue(int axis, InputControllerSettings *settings, bool highSensitivity);
     virtual int getNumberOfAxes() const = 0;
     virtual bool supportsConfiguration() const { return false; }
-    virtual void configure(InputControllerSettings *settings) {};
+    virtual void configure(InputControllerSettings *settings) { (void) settings; };
 
 signals:
     void buttonChanged(int button, bool released);