EVP,KDF: Add more error code along some return 0

in methods :
- EVP_PBE_scrypt
- EVP_PKEY_meth_add0
- EVP_PKEY_meth_new
- EVP_PKEY_CTX_dup

Backport of 3484236d

Reviewed-by: Bernd Edlinger <bernd.edlinger@hotmail.de>
Reviewed-by: Rich Salz <rsalz@openssl.org>
Reviewed-by: Matthias St. Pierre <Matthias.St.Pierre@ncp-e.com>
(Merged from https://github.com/openssl/openssl/pull/5803)