[openssl/openssl] 26f75c: Add notes on use of strdup

[nkarstens]

  Branch: refs/heads/master
  Home:   https://github.com/openssl/openssl
  Commit: 26f75c2d604014069b5ff32cdf7f13f9e6aec5e6
      https://github.com/openssl/openssl/commit/26f75c2d604014069b5ff32cdf7f13f9e6aec5e6
  Author: Nate Karstens <nate.karstens at garmin.com>
  Date:   2023-10-24 (Tue, 24 Oct 2023)

  Changed paths:
    M crypto/conf/conf_lib.c

  Log Message:
  -----------
  Add notes on use of strdup

Added notes to OPENSSL_INIT_set_config_filename and
OPENSSL_INIT_set_config_appname explaining why strdup
is used instead of OPENSSL_strdup.

CLA: trivial

Co-authored-by: Jean Apolo <jean.apolo at garmin.com>
Signed-off-by: Jean Apolo <jean.apolo at garmin.com>
Signed-off-by: Nate Karstens <nate.karstens at garmin.com>

Reviewed-by: Tomas Mraz <tomas at openssl.org>
Reviewed-by: Paul Dale <pauli at openssl.org>
(Merged from https://github.com/openssl/openssl/pull/21742)