Further TLS extension updates

Submitted by: Peter Sylvester
diff --git a/apps/s_client.c b/apps/s_client.c
index 96cf511..47cd9d9 100644
--- a/apps/s_client.c
+++ b/apps/s_client.c
@@ -647,7 +647,7 @@
 #ifndef OPENSSL_NO_TLSEXT
 	if (servername != NULL)
 		{
-		if (!SSL_set_tlsext_hostname(con,servername))
+		if (!SSL_set_tlsext_host_name(con,servername))
 			{
 			BIO_printf(bio_err,"Unable to set TLS servername extension.\n");
 			ERR_print_errors(bio_err);