[mutter/bilelmoussaoui/without-xwayland: 325/328] ci: Disable xwayland when wayland is disabled

[Bilal Elmoussaoui <bilelmoussaoui src gnome org>]

commit f09bce823b4c3722b211842d4ea897fb77a75ec6
Author: Bilal Elmoussaoui <belmouss redhat com>
Date:   Tue May 3 16:52:51 2022 +0200

    ci: Disable xwayland when wayland is disabled
    
    As we error out if wayland is disabled and xwayland is enabled

 .gitlab-ci.yml | 1 +
 1 file changed, 1 insertion(+)
---
diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 00e955a031..63963843fd 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -317,6 +317,7 @@ build-without-native-backend-and-wayland@x86_64:
         -Dnative_backend=false
         -Dudev=false
         -Dwayland=false
+        -Dxwayland=false
         -Dcore_tests=false
         -Dnative_tests=false
     - meson compile -C build