well...in DH we know that Dumbledore had always known(well at least for the past 2 yrs) that for Voldemort to die, Harry should die.
So according to his plan, Harry wud have ultimately died though yes becoz of his intelligence understanding and rock steady belief in "love" he had guessed that Harry may not aftreall gave to die...('when time comes...he(Harry) will be ready'-DD)
But still that was just a guess and he wasnt so sure...so according to bhis plan to finish off Voldemort, if Harry's dies... VOldemort will once again be a mortal man---then who will kill Voldy?😕 did he intend Snape to kill Voldemort?