qcam: Pass camera manager to MainWindow class

Pass the CameraManager instance from the main() function to the
MainWindow class instead of accessing it through
CameraManager::instance(). This prepares for the removal of the
CameraManager::instance() method.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Jacopo Mondi <jacopo@jmondi.org>

src/qcam/main.cpp

@@ -73,7 +73,7 @@ int main(int argc, char **argv)
 		return EXIT_FAILURE;
 	}
 
-	MainWindow *mainWindow = new MainWindow(options);
+	MainWindow *mainWindow = new MainWindow(cm, options);
 	mainWindow->show();
 	ret = app.exec();
 	delete mainWindow;