session: correct error message as per PeterG email from 10-12-2015
session: correct error message as per PeterG email from 10-12-2015

mejedi/tarantool,mejedi/tarantool,ocelot-inc/tarantool,mejedi/tarantool,ocelot-inc/tarantool,rtsisyk/tarantool,ocelot-inc/tarantool,rtsisyk/tarantool,rtsisyk/tarantool,mejedi/tarantool,rtsisyk/tarantool,ocelot-inc/tarantool