[openssl/openssl] 50b3c4: test_provider_ex(): Add missing call failure checks

[Tomáš Mráz]

  Branch: refs/heads/master
  Home:   https://github.com/openssl/openssl
  Commit: 50b3c47b65e47a4f52ed1c47a0f248beb890193e
      https://github.com/openssl/openssl/commit/50b3c47b65e47a4f52ed1c47a0f248beb890193e
  Author: Tomas Mraz <tomas at openssl.org>
  Date:   2023-10-09 (Mon, 09 Oct 2023)

  Changed paths:
    M test/provider_test.c

  Log Message:
  -----------
  test_provider_ex(): Add missing call failure checks

Fixes Coverity 1542440

Reviewed-by: Tim Hudson <tjh at openssl.org>
Reviewed-by: Dmitry Belyavskiy <beldmit at gmail.com>
Reviewed-by: Paul Dale <pauli at openssl.org>
(Merged from https://github.com/openssl/openssl/pull/21913)