[Bug] When libspdm_verify_cert_chain_data has received a leaf cert, the openssl and mbedtls result is different

[Wenxing-hou]

When libspdm_verify_cert_chain_data has received a leaf cert, the Mbedtls test result is failed and the Openssl test result is successful.
Please refer to my own PR: Wenxing-hou#16

        status = libspdm_read_input_file("rsa2048/end_requester.cert.der",
                                         (void **)&file_buffer, &file_buffer_size);
        assert_true(status);

        status = libspdm_verify_cert_chain_data(file_buffer, file_buffer_size,
                                                   SPDM_ALGORITHMS_BASE_ASYM_ALGO_TPM_ALG_RSASSA_2048,
                                                   SPDM_ALGORITHMS_BASE_HASH_ALGO_TPM_ALG_SHA_256,
                                                   true, true);
        assert_true(status);

The Openssl test result should be failed either.