added a  default constructor for result_t
added a  default constructor for result_t

rsdevgun16e/energi,jmgilbert2/energi,RyanLucchese/energi,jmgilbert2/energi,rsdevgun16e/energi,jmgilbert2/energi,jmgilbert2/energi,jmgilbert2/energi,RyanLucchese/energi,RyanLucchese/energi,jmgilbert2/energi,rsdevgun16e/energi,RyanLucchese/energi,rsdevgun16e/energi,RyanLucchese/energi,rsdevgun16e/energi,rsdevgun16e/energi,RyanLucchese/energi