Fix potential leak in error path in cert_response()

Fix potential leak in error path in cert_response()

get1_cert_status() returns an object that must be freed,
but the error path does not do that.
Fix it by adding a call to X509_free() in the error path.

Reviewed-by: Viktor Dukhovni <viktor@openssl.org>
Reviewed-by: Tomas Mraz <tomas@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/26513)

(cherry picked from commit 56160f173d055486357b7a315ab4e9579b2538d5)