Fixed passing QPoint reference from right click enabler to connected method. Fixes #1549

sdrgui/mainwindow.cpp

@@ -3078,6 +3078,7 @@ void MainWindow::orientationChanged(Qt::ScreenOrientation orientation)
         setTabPosition(Qt::LeftDockWidgetArea, QTabWidget::West);
     } else {
         setTabPosition(Qt::LeftDockWidgetArea, QTabWidget::South);
-    }
+#else
+    (void) orientation;
 #endif
 }