Add HRR handler

Signed-off-by: Jerry Yu <jerry.h.yu@arm.com>
diff --git a/library/ssl_misc.h b/library/ssl_misc.h
index 941e796..7cf677a 100644
--- a/library/ssl_misc.h
+++ b/library/ssl_misc.h
@@ -585,17 +585,14 @@
      */
 #if defined(MBEDTLS_SSL_PROTO_TLS1_3)
     int tls13_kex_modes; /*!< key exchange modes for TLS 1.3 */
-#endif /* MBEDTLS_SSL_PROTO_TLS1_3 */
 
-#if defined(MBEDTLS_SSL_CLI_C)
-    /** Number of Hello Retry Request messages received from the server.  */
+    /* Number of HelloRetryRequest messages received/sent from the server. */
     int hello_retry_request_count;
-#endif /* MBEDTLS_SSL_CLI_C */
-
 #if defined(MBEDTLS_SSL_SRV_C)
     /** selected_group of key_share extension in HelloRetryRequest message. */
     uint16_t hrr_selected_group;
 #endif /* MBEDTLS_SSL_SRV_C */
+#endif /* MBEDTLS_SSL_PROTO_TLS1_3 */
 
 #if defined(MBEDTLS_SSL_PROTO_TLS1_2) && \
     defined(MBEDTLS_KEY_EXCHANGE_WITH_CERT_ENABLED)