tls13: server: Note down client not being authenticated in SSL context

Signed-off-by: Ronald Cron <ronald.cron@arm.com>
diff --git a/library/ssl_tls13_server.c b/library/ssl_tls13_server.c
index 8b9ac34..f82cc04 100644
--- a/library/ssl_tls13_server.c
+++ b/library/ssl_tls13_server.c
@@ -2429,7 +2429,10 @@
     authmode = ssl->conf->authmode;
 
     if( authmode == MBEDTLS_SSL_VERIFY_NONE )
+    {
+        ssl->session_negotiate->verify_result = MBEDTLS_X509_BADCERT_SKIP_VERIFY;
         return( SSL_CERTIFICATE_REQUEST_SKIP );
+    }
 
     ssl->handshake->certificate_request_sent = 1;