Leave the preference order for hashes unspecified

We don't seem to have strong feelings about this, so allow ourselves to
change the order later.

Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
diff --git a/library/ssl_tls.c b/library/ssl_tls.c
index 07569b2..3bbdcb0 100644
--- a/library/ssl_tls.c
+++ b/library/ssl_tls.c
@@ -6099,8 +6099,8 @@
 
 #if defined(MBEDTLS_KEY_EXCHANGE_WITH_CERT_ENABLED)
 /* The selection should be the same as mbedtls_x509_crt_profile_default in
- * x509_crt.c. Here, the order matters: larger hashes first, for consistency
- * with curves.
+ * x509_crt.c. Here, the order matters. Currently we favor stronger hashes,
+ * for no fundamental reason.
  * See the documentation of mbedtls_ssl_conf_curves() for what we promise
  * about this list. */
 static int ssl_preset_default_hashes[] = {