Refine HRR parse successfully message in test cases

Signed-off-by: XiaokangQian <xiaokang.qian@arm.com>
diff --git a/library/ssl_tls13_client.c b/library/ssl_tls13_client.c
index 75978a8..ca91d67 100644
--- a/library/ssl_tls13_client.c
+++ b/library/ssl_tls13_client.c
@@ -1514,7 +1514,8 @@
         MBEDTLS_SSL_PROC_CHK( ssl_tls13_postprocess_server_hello( ssl ) );
 
 cleanup:
-    MBEDTLS_SSL_DEBUG_MSG( 2, ( "<= %s:is_hrr = %d", __func__, is_hrr ) );
+    MBEDTLS_SSL_DEBUG_MSG( 2, ( "<= %s ( %s )", __func__,
+                                is_hrr?"HelloRetryRequest":"ServerHello" ) );
     return( ret );
 }