odr_seek(o, ODR_S_SET, o->stack[o->stackp].len_offset);
if ((res = ber_enclen(o, pos - o->stack[o->stackp].base_offset,
o->stack[o->stackp].lenlen, 1)) < 0)
odr_seek(o, ODR_S_SET, o->stack[o->stackp].len_offset);
if ((res = ber_enclen(o, pos - o->stack[o->stackp].base_offset,
o->stack[o->stackp].lenlen, 1)) < 0)