[mutter] Fix compiler errors when Wayland support is disabled

[Georges Basile Stavracas Neto <gbsneto src gnome org>]

commit d686dc9f46faeb69bb8451fe7392a8278a52e6a9
Author: Jonas Ådahl <jadahl gmail com>
Date:   Fri Aug 17 13:56:47 2018 +0200

    Fix compiler errors when Wayland support is disabled

 src/x11/meta-x11-display.c | 1 +
 1 file changed, 1 insertion(+)
---
diff --git a/src/x11/meta-x11-display.c b/src/x11/meta-x11-display.c
index c35f17336..8c5dfaafd 100644
--- a/src/x11/meta-x11-display.c
+++ b/src/x11/meta-x11-display.c
@@ -48,6 +48,7 @@
 #include <X11/extensions/Xrandr.h>
 
 #include "backends/meta-backend-private.h"
+#include "backends/meta-cursor-sprite-xcursor.h"
 #include "backends/meta-logical-monitor.h"
 #include "backends/meta-settings-private.h"
 #include "backends/x11/meta-backend-x11.h"