log actual NID causing the 'unknown message digest algorithm error'

Reviewed-by: NDmitry Belyavskiy <beldmit@gmail.com>
Reviewed-by: NTomas Mraz <tomas@openssl.org>
Reviewed-by: NPaul Dale <pauli@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/21214)

crypto/asn1/a_verify.c

@@ -180,8 +180,9 @@ int ASN1_item_verify_ctx(const ASN1_ITEM *it, const X509_ALGOR *alg,
             if (mdnid != NID_undef) {
                 type = EVP_get_digestbynid(mdnid);
                 if (type == NULL) {
-                    ERR_raise(ERR_LIB_ASN1,
-                              ASN1_R_UNKNOWN_MESSAGE_DIGEST_ALGORITHM);
+                    ERR_raise_data(ERR_LIB_ASN1,
+                                   ASN1_R_UNKNOWN_MESSAGE_DIGEST_ALGORITHM,
+                                   "nid=0x%x", mdnid);
                     goto err;
                 }
             }