[openssl/openssl] 5df503: Fix incomplete error check on ASN1_item_i2d()

[Niels Dossche]

  Branch: refs/heads/master
  Home:   https://github.com/openssl/openssl
  Commit: 5df5032ab02d7a17e07435de777d730bae190253
      https://github.com/openssl/openssl/commit/5df5032ab02d7a17e07435de777d730bae190253
  Author: ndossche <niels.dossche at ugent.be>
  Date:   2023-02-28 (Tue, 28 Feb 2023)

  Changed paths:
    M crypto/asn1/asn_pack.c

  Log Message:
  -----------
  Fix incomplete error check on ASN1_item_i2d()

According to the documentation and my analysis tool
ASN1_item_i2d() can return a negative value on error,
but this is not checked. Fix it by changing the error check condition.

CLA: trivial

Reviewed-by: Tomas Mraz <tomas at openssl.org>
Reviewed-by: Paul Dale <pauli at openssl.org>
(Merged from https://github.com/openssl/openssl/pull/20251)