[openssl/openssl] 3d254b: Fix a leak in an error path in OSSL_DECODER_CTX_ne...

[Matt Caswell]

  Branch: refs/heads/master
  Home:   https://github.com/openssl/openssl
  Commit: 3d254b31344e82b8f10fda8bab196757a377eb63
      https://github.com/openssl/openssl/commit/3d254b31344e82b8f10fda8bab196757a377eb63
  Author: Matt Caswell <matt at openssl.org>
  Date:   2023-08-15 (Tue, 15 Aug 2023)

  Changed paths:
    M crypto/encode_decode/decoder_pkey.c

  Log Message:
  -----------
  Fix a leak in an error path in OSSL_DECODER_CTX_new_for_pkey()

Found via the reproducible error injection in #21668

Reviewed-by: Tomas Mraz <tomas at openssl.org>
Reviewed-by: Tom Cosgrove <tom.cosgrove at arm.com>
(Merged from https://github.com/openssl/openssl/pull/21723)