st_getstrtab_sz
extern size_t st_getstrtab_sz(Str_tbl *);
size = st_getstrtab_sz(ofl->ofl_shdrsttab);
size = st_getstrtab_sz(ofl->ofl_strtab);
size = st_getstrtab_sz(ofl->ofl_dynstrtab);
data_size = st_getstrtab_sz(osp->os_mstrtab);
assert(data->d_size == (st_getstrtab_sz(stp) + extra));
stbufsize = st_getstrtab_sz(stp);
stbufsize = st_getstrtab_sz(stp);