fix memory leak in flimflam dbus support

gdbus/watch.c

 /*
  *
  *  D-Bus helper library
  *
  *  Copyright (C) 2004-2009  Marcel Holtmann <marcel@holtmann.org>
  *
  *
  *  This program is free software; you can redistribute it and/or modify
  *  it under the terms of the GNU General Public License as published by
  *  the Free Software Foundation; either version 2 of the License, or
@@ skipping 368 matching lines @@
                 g_free(data);
                 goto done;
         }
 
         if (call == NULL) {
                 error("D-Bus connection not available");
                 g_free(data);
                 goto done;
         }
 
-        dbus_pending_call_set_notify(call, service_reply, data, NULL);
+        dbus_pending_call_set_notify(call, service_reply, data, g_free);
 
 done:
         dbus_message_unref(message);
 }
 
 guint g_dbus_add_service_watch(DBusConnection *connection, const char *name,
                                 GDBusWatchFunction connect,
                                 GDBusWatchFunction disconnect,
                                 void *user_data, GDBusDestroyFunction destroy)
 {
@@ skipping 102 matching lines @@
 {
         struct name_data *data;
 
         while ((data = name_data_find(connection, NULL))) {
                 name_listeners = g_slist_remove(name_listeners, data);
                 name_data_call_and_free(data);
         }
 
         dbus_connection_remove_filter(connection, name_exit_filter, NULL);
 }