Macaulay Culkin recently  told Gentleman’s Journal  that part of the reason why Catherine O’Hara’s death hit him so hard earlier this year is because “I felt that we had unfinished business.” O’Hara played Culkin’s mother in the comedy classics “ Home Alone ” and “Home Alone 2: Escape from New York,” which combined grossed more than $830 million worldwide. “When Catherine passed away in January, that hit me. That hit me pretty good, because, you know, it was just too soon,” Culkin told the publication. “I felt that we had unfinished business. I definitely feel like I had unfinished business with her, you know? I feel like I owed her a favor — and I don’t like having an outstanding debt.” Popular on Variety O’Haria died Jan. 30 at 71 years old from a pulmonary embolism, with rectal cancer as an underlying condition.…