Ensure the end of first server flight processing is done

There is a set of miscellaneous processing for OCSP, CT etc at the end of
the ServerDone processing. In TLS1.3 we don't have a ServerDone, so this
needs to move elsewhere.

Reviewed-by: Rich Salz <rsalz@openssl.org>

ssl/ssl_err.c

diff --git a/ssl/ssl_err.c b/ssl/ssl_err.c
index 825c563..49a9d44 100644
--- a/ssl/ssl_err.c
+++ b/ssl/ssl_err.c
@@ -313,6 +313,8 @@
     {ERR_FUNC(SSL_F_TLS_PROCESS_CLIENT_KEY_EXCHANGE),
      "tls_process_client_key_exchange"},
     {ERR_FUNC(SSL_F_TLS_PROCESS_FINISHED), "tls_process_finished"},
+    {ERR_FUNC(SSL_F_TLS_PROCESS_INITIAL_SERVER_FLIGHT),
+     "tls_process_initial_server_flight"},
     {ERR_FUNC(SSL_F_TLS_PROCESS_KEY_EXCHANGE), "tls_process_key_exchange"},
     {ERR_FUNC(SSL_F_TLS_PROCESS_NEW_SESSION_TICKET),
      "tls_process_new_session_ticket"},