[gdm] daemon: Fix double free of GError

[Robert Ancell <rancell src gnome org>]

commit 9583197ab7b1e7ad471769dd3941ed729a65b988
Author: Robert Ancell <robert ancell canonical com>
Date:   Thu Sep 28 13:31:25 2017 -0400

    daemon: Fix double free of GError
    
    https://bugzilla.gnome.org/show_bug.cgi?id=788300

 daemon/main.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/daemon/main.c b/daemon/main.c
index 010fff2..d45fab9 100644
--- a/daemon/main.c
+++ b/daemon/main.c
@@ -340,7 +340,7 @@ main (int    argc,
         if (! res) {
                 g_warning ("%s", error->message);
                 g_error_free (error);
-                goto out;
+                exit (1);
         }
 
         if (print_version) {