[openssl/openssl] da6159: cmp: add null pointer check in tear_down test func...

[Pauli]

  Branch: refs/heads/openssl-3.1
  Home:   https://github.com/openssl/openssl
  Commit: da6159e62f681ed7228bd326e314f74417858c6e
      https://github.com/openssl/openssl/commit/da6159e62f681ed7228bd326e314f74417858c6e
  Author: Pauli <pauli at openssl.org>
  Date:   2023-10-13 (Fri, 13 Oct 2023)

  Changed paths:
    M test/cmp_protect_test.c

  Log Message:
  -----------
  cmp: add null pointer check in tear_down test function

problem reported by: 2ourc3

Reviewed-by: Shane Lontis <shane.lontis at oracle.com>
Reviewed-by: Tom Cosgrove <tom.cosgrove at arm.com>
Reviewed-by: Tomas Mraz <tomas at openssl.org>
(Merged from https://github.com/openssl/openssl/pull/22355)

(cherry picked from commit 91a5c0e40cf272d18b65c9e4c9a0268f244758a8)