fix review comments

Signed-off-by: Pengyu Lv <pengyu.lv@arm.com>
diff --git a/library/ssl_tls13_server.c b/library/ssl_tls13_server.c
index 49b4c2d..d5dbf82 100644
--- a/library/ssl_tls13_server.c
+++ b/library/ssl_tls13_server.c
@@ -2567,6 +2567,10 @@
     mbedtls_ssl_tls13_handshake_wrapup(ssl);
 
 #if defined(MBEDTLS_SSL_SESSION_TICKETS)
+/* TODO: Remove the check of SOME_PSK_ENABLED since SESSION_TICKETS requires
+ *       SOME_PSK_ENABLED to be enabled. Here is just to make CI happy. It is
+ *       expected to be resolved with issue#6395.
+ */
 #if defined(MBEDTLS_SSL_TLS1_3_KEY_EXCHANGE_MODE_SOME_PSK_ENABLED)
     /* Sent NewSessionTicket message only when client supports PSK */
     if (!mbedtls_ssl_tls13_some_psk_enabled(ssl)) {