ssl.session: minor fixes and tweaks.

Author: agentzh

lib/ngx/ssl/session.lua

@@ -1,4 +1,4 @@
-local _M = {}
+-- Copyright (C) Yichun Zhang (agentzh)
 
 
 local ffi = require "ffi"
@@ -32,6 +32,9 @@ int ngx_http_lua_ffi_ssl_get_session_id_size(ngx_http_request_t *r,
 ]]
 
 
+local _M = { version = base.version }
+
+
 -- return session, err
 function _M.get_serialized_session()
     local r = getfenv(0).__ngx_req