Fix format issues

Signed-off-by: Xiaokang Qian <xiaokang.qian@arm.com>
diff --git a/library/ssl_misc.h b/library/ssl_misc.h
index d454ebb..581e153 100644
--- a/library/ssl_misc.h
+++ b/library/ssl_misc.h
@@ -2058,9 +2058,10 @@
 #endif /* MBEDTLS_ECDH_C */
 
 #if defined(MBEDTLS_SSL_EARLY_DATA)
-int mbedtls_ssl_tls13_write_early_data_ext(
-    mbedtls_ssl_context *ssl,
-    unsigned char *buf, const unsigned char *end, size_t *olen);
+int mbedtls_ssl_tls13_write_early_data_ext( mbedtls_ssl_context *ssl,
+                                            unsigned char *buf,
+                                            const unsigned char *end,
+                                            size_t *out_len );
 #endif /* MBEDTLS_SSL_EARLY_DATA */
 
 #endif /* MBEDTLS_SSL_PROTO_TLS1_3 */
diff --git a/library/ssl_tls13_client.c b/library/ssl_tls13_client.c
index 8879c44..c019db2 100644
--- a/library/ssl_tls13_client.c
+++ b/library/ssl_tls13_client.c
@@ -693,7 +693,6 @@
 }
 
 #if defined(MBEDTLS_SSL_SESSION_TICKETS)
-MBEDTLS_CHECK_RETURN_CRITICAL
 static int ssl_tls13_has_configured_ticket( mbedtls_ssl_context *ssl )
 {
     mbedtls_ssl_session *session = ssl->session_negotiate;
@@ -1094,8 +1093,7 @@
     }
 
 #if defined(MBEDTLS_SSL_SESSION_TICKETS)
-    if( selected_identity == 0 &&
-        ssl_tls13_has_configured_ticket( ssl ) )
+    if( selected_identity == 0 && ssl_tls13_has_configured_ticket( ssl ) )
     {
         ret = ssl_tls13_ticket_get_psk( ssl, &hash_alg, &psk, &psk_len );
     }
@@ -1174,8 +1172,8 @@
         p += ext_len;
 
         ssl->handshake->early_data = MBEDTLS_SSL_EARLY_DATA_ON;
-        /* We're using rejected once we send the EarlyData extension,
-           and change it to accepted upon receipt of the server extension. */
+        /* Initializes the status to `rejected`. Changes it to `accepted`
+         * when `early_data` is received in EncryptedExtesion. */
         ssl->early_data_status = MBEDTLS_SSL_EARLY_DATA_STATUS_REJECTED;
     }
     else
diff --git a/library/ssl_tls13_generic.c b/library/ssl_tls13_generic.c
index a273151..0479038 100644
--- a/library/ssl_tls13_generic.c
+++ b/library/ssl_tls13_generic.c
@@ -1374,11 +1374,11 @@
 
 #endif /* MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE */
 
-/* Early Data Extension
+/* Early Data Indication Extension
  *
  * struct {
  *   select ( Handshake.msg_type ) {
- *     case new_session_ticket:   uint32 max_early_data_size;
+ *     ...
  *     case client_hello:         Empty;
  *     case encrypted_extensions: Empty;
  *   };
@@ -1399,7 +1399,6 @@
             3, ( "client hello, adding early_data extension" ) );
 
     MBEDTLS_PUT_UINT16_BE( MBEDTLS_TLS_EXT_EARLY_DATA, p, 0 );
-    /* Write length of the early data indication extension */
     MBEDTLS_PUT_UINT16_BE( 0, p, 2 );
 
     *out_len = 4;