[openssl/openssl] 060f37: Fix a typo found by codespell in a variable name

[Dimitri Papadopoulos Orfanos]

  Branch: refs/heads/master
  Home:   https://github.com/openssl/openssl
  Commit: 060f370ebc21b4d334a71ca8b8ab54f22199f177
      https://github.com/openssl/openssl/commit/060f370ebc21b4d334a71ca8b8ab54f22199f177
  Author: Dimitri Papadopoulos <3234522+DimitriPapadopoulos at users.noreply.github.com>
  Date:   2023-05-11 (Thu, 11 May 2023)

  Changed paths:
    M crypto/bn/bn_lib.c

  Log Message:
  -----------
  Fix a typo found by codespell in a variable name

The change is limited to a single C file.

CLA: trivial

Reviewed-by: Hugo Landau <hlandau at openssl.org>
Reviewed-by: Richard Levitte <levitte at openssl.org>
Reviewed-by: Paul Dale <pauli at openssl.org>
(Merged from https://github.com/openssl/openssl/pull/20912)