Remove compile warning -Wparentheses

src/Application.cpp

@@ -260,7 +260,7 @@ int Application::newInstance()
         if (createdNewMainWindow) {
             finalizeNewMainWindow(window);
         } else {
-            window->setWindowState(window->windowState() & ~Qt::WindowMinimized | Qt::WindowActive);
+            window->setWindowState(window->windowState() & (~Qt::WindowMinimized | Qt::WindowActive));
             window->show();
             window->activateWindow();
         }