Revert "tls13: early_data: cli: remove nst_ prefix"

This reverts commit 3781ab40fb24c06ca7401bcecc3e1aa31d669a55.

Signed-off-by: Yanray Wang <yanray.wang@arm.com>
diff --git a/library/ssl_tls13_client.c b/library/ssl_tls13_client.c
index fec4a7d..a62d2bc 100644
--- a/library/ssl_tls13_client.c
+++ b/library/ssl_tls13_client.c
@@ -2658,16 +2658,10 @@
  * } EarlyDataIndication;
  */
 MBEDTLS_CHECK_RETURN_CRITICAL
-static int ssl_tls13_parse_early_data_ext(mbedtls_ssl_context *ssl,
-                                          const unsigned char *buf,
-                                          const unsigned char *end)
+static int ssl_tls13_parse_nst_early_data_ext(mbedtls_ssl_context *ssl,
+                                              const unsigned char *buf,
+                                              const unsigned char *end)
 {
-    /* Make sure early data indication extension is received from
-     * NewSessionTicket. */
-    if (!mbedtls_ssl_is_handshake_over(ssl)) {
-        return MBEDTLS_ERR_SSL_ILLEGAL_PARAMETER;
-    }
-
     mbedtls_ssl_session *session = ssl->session;
 
     MBEDTLS_SSL_CHK_BUF_READ_PTR(buf, end, 4);
@@ -2716,11 +2710,11 @@
         switch (extension_type) {
 #if defined(MBEDTLS_SSL_EARLY_DATA)
             case MBEDTLS_TLS_EXT_EARLY_DATA:
-                ret = ssl_tls13_parse_early_data_ext(
+                ret = ssl_tls13_parse_nst_early_data_ext(
                     ssl, p, p + extension_data_len);
                 if (ret != 0) {
                     MBEDTLS_SSL_DEBUG_RET(
-                        1, "ssl_tls13_parse_early_data_ext", ret);
+                        1, "ssl_tls13_parse_nst_early_data_ext", ret);
                 }
                 break;
 #endif /* MBEDTLS_SSL_EARLY_DATA */