[mutter] xwayland: Put the filename in the error message

[Jasper St. Pierre <jstpierre src gnome org>]

commit e5ab4f13f19636cb7f03f4371442d4ad2f54796a
Author: Jasper St. Pierre <jstpierre mecheye net>
Date:   Thu Apr 17 14:44:06 2014 -0400

    xwayland: Put the filename in the error message

 src/wayland/meta-xwayland.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/src/wayland/meta-xwayland.c b/src/wayland/meta-xwayland.c
index 8eba0e7..15ff8f4 100644
--- a/src/wayland/meta-xwayland.c
+++ b/src/wayland/meta-xwayland.c
@@ -166,7 +166,7 @@ create_lockfile (int display, int *display_out)
             {
               if (unlink (filename) < 0)
                 {
-                  g_warning ("failed to unlink stale lock file: %m");
+                  g_warning ("failed to unlink stale lock file %s: %m", filename);
                   display++;
                 }
               g_free (filename);