OpenSSL: Fix ca_cert_verify for TPM

This bit is set in the code path that handles keys and certs from places
other than OpenSSL authentication engines. Setting this bit causes
authentication to fail when the server provides certificates that don't
match the client certificate authority.

src/crypto/tls_openssl.c

@@ -1922,6 +1922,8 @@ static int tls_connection_engine_ca_cert(void *_ssl_ctx,
 	wpa_printf(MSG_DEBUG, "OpenSSL: %s - added CA certificate from engine "
 		   "to certificate store", __func__);
 	SSL_set_verify(conn->ssl, SSL_VERIFY_PEER, tls_verify_cb);
+	conn->ca_cert_verify = 1;
+
 	return 0;
 
 #else /* OPENSSL_NO_ENGINE */