Make guards more consistent between X.509-has-certs and SSL-has-certs

Fix some build errors when MBEDTLS_SSL_HANDSHAKE_WITH_CERT_ENABLED is false
but MBEDTLS_X509_CRT_PARSE_C is enabled. This is not a particularly useful
configuration, but for quick testing, it's convenient for it to work.

Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
diff --git a/programs/ssl/ssl_test_common_source.c b/programs/ssl/ssl_test_common_source.c
index 6d333e8..f634b3e 100644
--- a/programs/ssl/ssl_test_common_source.c
+++ b/programs/ssl/ssl_test_common_source.c
@@ -315,7 +315,7 @@
 };
 #endif /* MBEDTLS_X509_CRT_PARSE_C */
 
-#if defined(MBEDTLS_X509_CRT_PARSE_C)
+#if defined(MBEDTLS_SSL_HANDSHAKE_WITH_CERT_ENABLED)
 /** Functionally equivalent to mbedtls_x509_crt_verify_info, see that function
  *  for more info.
  */
@@ -350,9 +350,7 @@
     return (int) (size - n);
 #endif /* MBEDTLS_X509_REMOVE_INFO */
 }
-#endif /* MBEDTLS_X509_CRT_PARSE_C */
 
-#if defined(MBEDTLS_SSL_HANDSHAKE_WITH_CERT_ENABLED)
 static void mbedtls_print_supported_sig_algs(void)
 {
     mbedtls_printf("supported signature algorithms:\n");