[openssl/openssl] 7f1465: fix compile error (SIZE_MAX not found) on HP-UX

[johnkohl-hcl]

  Branch: refs/heads/master
  Home:   https://github.com/openssl/openssl
  Commit: 7f14656e1cc002a09b2d6148302a1fc71a30f7cd
      https://github.com/openssl/openssl/commit/7f14656e1cc002a09b2d6148302a1fc71a30f7cd
  Author: John Kohl <john.kohl at hcl.com>
  Date:   2023-07-28 (Fri, 28 Jul 2023)

  Changed paths:
    M ssl/priority_queue.c

  Log Message:
  -----------
  fix compile error (SIZE_MAX not found) on HP-UX

Fixes #21554

CLA: trivial

Reviewed-by: Hugo Landau <hlandau at openssl.org>
Reviewed-by: Matt Caswell <matt at openssl.org>
Reviewed-by: Paul Dale <pauli at openssl.org>
(Merged from https://github.com/openssl/openssl/pull/21562)