http__clear_xtra(req);
void http_req_free(Httpd_req_data *req){  if (!req) /* for if/when move to malloc/free */    return;  ASSERT(req->done_once && req->using_req);  /* we do vstr deletes here to return the nodes back to the pool */  vstr_del(req->fname, 1, req->fname->len);  ASSERT(!req->http_hdrs->multi->combiner_store->len);  if (req->f_mmap)    vstr_del(req->f_mmap, 1, req->f_mmap->len);  http__clear_xtra(req);    req->http_hdrs->multi->comb = NULL;  req->using_req = FALSE;}