[openssl/openssl] bba03d: Add missing include for DH_get0_priv_key()

[Tomáš Mráz]

  Branch: refs/heads/openssl-3.0
  Home:   https://github.com/openssl/openssl
  Commit: bba03df4d9862273dddcb44e9ddab0c1626b6313
      https://github.com/openssl/openssl/commit/bba03df4d9862273dddcb44e9ddab0c1626b6313
  Author: Tomas Mraz <tomas at openssl.org>
  Date:   2022-10-17 (Mon, 17 Oct 2022)

  Changed paths:
    M test/evp_extra_test2.c

  Log Message:
  -----------
  Add missing include for DH_get0_priv_key()

Fixes #19410

Reviewed-by: Richard Levitte <levitte at openssl.org>
Reviewed-by: Kurt Roeckx <kurt at roeckx.be>
(Merged from https://github.com/openssl/openssl/pull/19411)

(cherry picked from commit bbaa24b7c5ca4d712ad539d4c5ed16af0dd908f4)