Ana Gasteyer stopped by “Late Night with Seth Meyers” with an important task: She wanted to apologize for her impersonation of Martha Stewart during her “SNL” years. There’s a lot of ground to cover in the apology, from the time she pretended to be Martha naked to the time she apparently faked a commencement speech as Martha that devolved into an obscene tirade. Sounds like she stands by her impression of Martha’s mispronounced words, though. Stewart seems to have taken it in stride. She was also a guest that night, and went on to do a cooking session with Gasteyer and Meyers. Meyers kept himself busy during the segment by eating all of the food she’d prepared.