fixed segfault in Session Manager registration when session manager is not available or sm_client_id is otherwise empty
fixed segfault in Session Manager registration when session manager is not available or sm_client_id is otherwise empty

born2late/afterstep-devel,born2late/afterstep-devel,born2late/afterstep-devel,born2late/afterstep-devel,born2late/afterstep-devel