ui/dbus: fix win32 compilation when !opengl

Fixes: https://gitlab.com/qemu-project/qemu/-/issues/1782

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-Id: <20230725112540.53284-1-marcandre.lureau@redhat.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>

ui/dbus-listener.c

@@ -338,6 +338,7 @@ static bool dbus_scanout_map(DBusDisplayListener *ddl)
     return true;
 }
 
+#ifdef CONFIG_OPENGL
 static bool
 dbus_scanout_share_d3d_texture(
     DBusDisplayListener *ddl,
@@ -399,7 +400,8 @@ dbus_scanout_share_d3d_texture(
 
     return true;
 }
-#endif
+#endif /* CONFIG_OPENGL */
+#endif /* WIN32 */
 
 #ifdef CONFIG_OPENGL
 static void dbus_scanout_texture(DisplayChangeListener *dcl,