[openssl/openssl] 928f15: Fix regression in i2d_re_X509_REQ_tbs()

[Tomáš Mráz]

  Branch: refs/heads/master
  Home:   https://github.com/openssl/openssl
  Commit: 928f15e71b0bccabb10cbdcbb9b2d4e85eeb5906
      https://github.com/openssl/openssl/commit/928f15e71b0bccabb10cbdcbb9b2d4e85eeb5906
  Author: Tomas Mraz <tomas at openssl.org>
  Date:   2022-10-05 (Wed, 05 Oct 2022)

  Changed paths:
    M crypto/x509/x509_req.c

  Log Message:
  -----------
  Fix regression in i2d_re_X509_REQ_tbs()

This fixes regression from commit 8e39049. There is also no point
in setting the modified flag after just calling i2d.

Fixes #19297

Reviewed-by: Hugo Landau <hlandau at openssl.org>
Reviewed-by: David von Oheimb <david.von.oheimb at siemens.com>
(Merged from https://github.com/openssl/openssl/pull/19299)