Recently I was in a Shul where the person who received the Aliya (this was the last Aliya) had an emergency and left in middle of his Aliya. He rushed out so quickly he did not say the Bracha that one makes after the Aliya. There were those who said that the Baal Korai (reader of the Torah) should say it instead of him, and there were others who said that it just gets skipped. What is the halacha in such a case? Does it matter if it is the Kohain or Levi who left?