[openssl/openssl] 4f1f3e: Coverity 1507376: Dereference after null check

[Pauli]

  Branch: refs/heads/openssl-3.0
  Home:   https://github.com/openssl/openssl
  Commit: 4f1f3e14728a1c5bccd2e49e988e8c8634caae58
      https://github.com/openssl/openssl/commit/4f1f3e14728a1c5bccd2e49e988e8c8634caae58
  Author: Pauli <pauli at openssl.org>
  Date:   2022-07-22 (Fri, 22 Jul 2022)

  Changed paths:
    M crypto/sparse_array.c

  Log Message:
  -----------
  Coverity 1507376: Dereference after null check

Reviewed-by: Hugo Landau <hlandau at openssl.org>
Reviewed-by: Tomas Mraz <tomas at openssl.org>
(Merged from https://github.com/openssl/openssl/pull/18837)

(cherry picked from commit 93429fc0ce9468242a463ff5878cd53b97e7f13f)