``` (gdb) list 2692 if (rpl.s==0) { 2693 LM_ERR("failed in doing build_res_buf_from_sip_req()\n"); 2694 goto error; 2695 } 2696 2697 LM_DBG("buffer computed\n"); 2698 // frees 'res.s' ... no panic ! 2699 ret=_reply_light( trans, rpl.s, rpl.len, code, 2700 s_to_tag.s, s_to_tag.len, 1 /* lock replies */, &bm ); 2701 /* this is ugly hack -- the function caller may wish to continue with ```