Handle evp_tests assumption of EVP_PKEY_FLAG_AUTOARGLEN

Without actually using EVP_PKEY_FLAG_AUTOARGLEN

Reviewed-by: Rich Salz <rsalz@openssl.org>
Reviewed-by: Richard Levitte <levitte@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/4793)
5 files changed