fix building with disable wayland (#2513)

QWaylandApplication definition doesn't exist on wayland disabled qt
binaries

Author: plenfulcleadent

src/frontend/qt_sdl/Screen.cpp

@@ -1299,13 +1299,15 @@ std::optional<WindowInfo> ScreenPanelGL::getWindowInfo()
         wi.display_connection = x11->display();
         wi.window_handle = reinterpret_cast<void*>(winId());
     }
+    #if defined(WAYLAND_ENABLED)
     else if (platform_name == QStringLiteral("wayland"))
     {
         wi.type = WindowInfo::Type::Wayland;
         const QWaylandApplication* wl = qApp->nativeInterface<QWaylandApplication>();
         wi.display_connection = wl->display();
         wi.window_handle = reinterpret_cast<void*>(winId());
     }
+    #endif
     #else
     QPlatformNativeInterface* pni = QGuiApplication::platformNativeInterface();
     if (platform_name == QStringLiteral("xcb"))