[mutter] window-actor/wayland: Add missing config.h

[Marge Bot <marge-bot src gnome org>]

commit c1215f4213dc2c383ffe00ecd73c4e98fa5145bd
Author: Jonas Ådahl <jadahl gmail com>
Date:   Mon May 30 23:14:05 2022 +0200

    window-actor/wayland: Add missing config.h
    
    The lack of this resulted in some surprises in header file macro
    processing.
    
    Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/2619>

 src/compositor/meta-window-actor-wayland.c | 2 ++
 1 file changed, 2 insertions(+)
---
diff --git a/src/compositor/meta-window-actor-wayland.c b/src/compositor/meta-window-actor-wayland.c
index f1ac2eab24..6fbd154a3b 100644
--- a/src/compositor/meta-window-actor-wayland.c
+++ b/src/compositor/meta-window-actor-wayland.c
@@ -20,6 +20,8 @@
  *     Georges Basile Stavracas Neto <gbsneto gnome org>
  */
 
+#include "config.h"
+
 #include "compositor/meta-surface-actor-wayland.h"
 #include "compositor/meta-window-actor-wayland.h"
 #include "meta/meta-window-actor.h"