bio_chain_destroy
bio_chain_destroy(bio, nitems(bio));
bio_chain_destroy(bio, nitems(bio));
bio_chain_destroy(A, nitems(A));
bio_chain_destroy(B, nitems(B));
static void bio_chain_destroy(BIO **, size_t);
bio_chain_destroy(bio, nitems(bio));
bio_chain_destroy(chain, len);