[openssl/openssl] 4650cf: Fix a use after free in error handling of hmac_dup

[bernd-edlinger]

  Branch: refs/heads/openssl-3.0
  Home:   https://github.openssl.org/openssl/openssl
  Commit: 4650cf23c84f33354e5284fbcf56f131aa83343b
      https://github.openssl.org/openssl/openssl/commit/4650cf23c84f33354e5284fbcf56f131aa83343b
  Author: Bernd Edlinger <bernd.edlinger at hotmail.de>
  Date:   2022-06-10 (Fri, 10 Jun 2022)

  Changed paths:
    M providers/implementations/macs/hmac_prov.c

  Log Message:
  -----------
  Fix a use after free in error handling of hmac_dup

dst->digest needs to be zeroized in case HMAC_CTX_copy
or ossl_prov_digest_copy return failure.

Fixes #18493

Reviewed-by: Tomas Mraz <tomas at openssl.org>
Reviewed-by: Matt Caswell <matt at openssl.org>
(Merged from https://github.com/openssl/openssl/pull/18502)

(cherry picked from commit cec1699f1f54ba8b87f055776dc77b48dd37d5fa)