[mutter] backends/x11: fix the property type for the scroll button

[Florian Müllner <fmuellner src gnome org>]

commit 453e02b779d8c0aa9966b451d717802cf41e7eb8
Author: Peter Hutterer <peter hutterer who-t net>
Date:   Tue Sep 8 16:10:07 2020 +1000

    backends/x11: fix the property type for the scroll button
    
    For reasons beyond my memory, this is an XA_CARDINAL, not an XA_INTEGER.
    
    https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/1431

 src/backends/x11/meta-input-settings-x11.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/src/backends/x11/meta-input-settings-x11.c b/src/backends/x11/meta-input-settings-x11.c
index d563f27c4c..c71ea70c1a 100644
--- a/src/backends/x11/meta-input-settings-x11.c
+++ b/src/backends/x11/meta-input-settings-x11.c
@@ -391,7 +391,7 @@ meta_input_settings_x11_set_scroll_button (MetaInputSettings  *settings,
                                            guint               button)
 {
   change_property (device, "libinput Button Scrolling Button",
-                   XA_INTEGER, 32, &button, 1);
+                   XA_CARDINAL, 32, &button, 1);
 }
 
 static void