EVP_CIPHER_CTX_get_algor_params() may attempt to access params array

at position -1 (prams[=1]).

The issue has been reported by coverity check.

Reviewed-by: Richard Levitte <levitte@openssl.org>
Reviewed-by: Tom Cosgrove <tom.cosgrove@arm.com>
Reviewed-by: Tomas Mraz <tomas@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/25303)