[glib] Silence a compiler warning

[Matthias Clasen <matthiasc src gnome org>]

commit 28008138c3ef88ad7f44055580f2b19796b9c29f
Author: Matthias Clasen <mclasen redhat com>
Date:   Tue Jun 14 20:15:04 2011 -0400

    Silence a compiler warning

 gio/gdbusaddress.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/gio/gdbusaddress.c b/gio/gdbusaddress.c
index 45d6fd0..feb098b 100644
--- a/gio/gdbusaddress.c
+++ b/gio/gdbusaddress.c
@@ -1289,7 +1289,7 @@ g_dbus_address_get_for_bus_sync (GBusType       bus_type,
         {
           g_print ("GDBus-debug:Address: Cannot look-up address bus type `%s': %s\n",
                    _g_dbus_enum_to_string (G_TYPE_BUS_TYPE, bus_type),
-                   local_error->message);
+                   local_error ? local_error->message : "");
         }
       _g_dbus_debug_print_unlock ();
     }