[mutter] wayland: Fix refcount error

[Robert Mader <rmader src gnome org>]

commit 533882ab771afb049c7205fd8214fe655cd5fa48
Author: Sergio Costas <raster rastersoft com>
Date:   Mon Sep 28 20:39:41 2020 +0200

    wayland: Fix refcount error
    
    The Meta.WaylandClient constructor receives a GSubprocessLauncher
    as a parameter, and stores it internally. Unfortunately, its
    refcount value isn't increased, which results in the object being
    released twice.
    
    This patch fixes this bug.
    
    Fix https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/1454

 src/wayland/meta-wayland-client.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/src/wayland/meta-wayland-client.c b/src/wayland/meta-wayland-client.c
index bba7ee1f87..01aa4c3282 100644
--- a/src/wayland/meta-wayland-client.c
+++ b/src/wayland/meta-wayland-client.c
@@ -129,7 +129,7 @@ meta_wayland_client_new (GSubprocessLauncher  *launcher,
     }
 
   client = g_object_new (META_TYPE_WAYLAND_CLIENT, NULL);
-  client->launcher = launcher;
+  client->launcher = g_object_ref (launcher);
   return client;
 }