[openssl/openssl] ec47c3: Coverity 1508506: misuse of time_t

[Pauli]

  Branch: refs/heads/openssl-3.0
  Home:   https://github.com/openssl/openssl
  Commit: ec47c3060bd3b7c3e75dbcfada113de9d94de747
      https://github.com/openssl/openssl/commit/ec47c3060bd3b7c3e75dbcfada113de9d94de747
  Author: Pauli <pauli at openssl.org>
  Date:   2022-08-22 (Mon, 22 Aug 2022)

  Changed paths:
    M crypto/packet.c
    M include/internal/packet.h
    M ssl/statem/extensions_srvr.c

  Log Message:
  -----------
  Coverity 1508506: misuse of time_t

Fixes a bug in the cookie code which would have caused problems for ten
minutes before and after the lower 32 bits of time_t rolled over.

Reviewed-by: Ben Kaduk <kaduk at mit.edu>
Reviewed-by: Matt Caswell <matt at openssl.org>
(Merged from https://github.com/openssl/openssl/pull/19023)