[openssl/openssl] 7ebd22: Check the return of EVP_KDF_fetch()

[Tomas Mraz]

  Branch: refs/heads/openssl-3.0
  Home:   https://github.openssl.org/openssl/openssl
  Commit: 7ebd227b87c6ae451cc6efaac8603c21cb418097
      https://github.openssl.org/openssl/openssl/commit/7ebd227b87c6ae451cc6efaac8603c21cb418097
  Author: tangyiqun <tangyiqun at uniontech.com>
  Date:   2022-04-13 (Wed, 13 Apr 2022)

  Changed paths:
    M crypto/dh/dh_kdf.c

  Log Message:
  -----------
  Check the return of EVP_KDF_fetch()

Reviewed-by: Paul Dale <pauli at openssl.org>
Reviewed-by: Tomas Mraz <tomas at openssl.org>
(Merged from https://github.com/openssl/openssl/pull/18096)

(cherry picked from commit 02119faee397565525151eb2ce39c424d129d287)