Backport "Merge PR #6574: FIX(client): Save local volume adjustment w…

…hen clicking slider bar" to 1.5.x (#6575)

src/mumble/VolumeSliderWidgetAction.cpp

@@ -63,6 +63,8 @@ VolumeSliderWidgetAction::VolumeSliderWidgetAction(QWidget *parent)
 			&VolumeSliderWidgetAction::on_VolumeSlider_changeCompleted);
 	connect(wheelEventFilter, &MouseWheelEventObserver::wheelEventObserved, this,
 			&VolumeSliderWidgetAction::on_VolumeSlider_changeCompleted);
+	connect(mouseEventFilter, &MouseClickEventObserver::clickEventObserved, this,
+			&VolumeSliderWidgetAction::on_VolumeSlider_changeCompleted);
 
 	UpDownKeyEventFilter *eventFilter = new UpDownKeyEventFilter(this);
 	m_volumeSlider->installEventFilter(eventFilter);