Glib: Memory leak when creating GDBusProxy

I'm trying to call DBus method of NetworkManager by using Glib-Dbus in linux. When I create a GDBusProxy by g_dbus_proxy_new_sync and then free it by g_object_unref, the new created GDBusProxy seems not to be freed. I have used pmap -x <pid> to display memory usage of my process and the RSS value increased continuously. Can someone help me?

Here is the code that causes the problem:

int main (int argc, char *argv[])
{
    GDBusConnection * connection = NULL;
    GDBusProxy * proxy = NULL;
    GError * error = NULL;

    connection = g_bus_get_sync(G_BUS_TYPE_SYSTEM,
                                NULL,
                                &error);
    g_assert_no_error(error);
    error = NULL;

    while (1)
    {
        proxy = g_dbus_proxy_new_sync(connection,
                                      G_DBUS_PROXY_FLAGS_DO_NOT_LOAD_PROPERTIES |      G_DBUS_PROXY_FLAGS_DO_NOT_CONNECT_SIGNALS,
                                      NULL,
                                      "org.freedesktop.NetworkManager",
                                      "/org/freedesktop/NetworkManager/Settings",
                                      "org.freedesktop    .NetworkManager.Settings",
                                      NULL,
                                      NULL);

        g_assert(proxy != NULL);
        g_object_unref(proxy);

    }

    g_object_unref(connection);

    return 0;
}

There is a patch attached to this bug report (which has been applied to the glib git repository) which should solve your problem: https://bugzilla.gnome.org/show_bug.cgi?id=758641

Presumably it will be in glib-2.46.3 and/or glib-2.48. It seems just to have been merged in the glib-2.46 branch.