Westfield Corp., the Australian company that owns Westfield Montgomery Mall, announced this week that it’s being sold for $15.8 billion to the French firm Unibail-Rodamco. What does that mean for our local mall and its sister property, Westfield Wheaton? No one knows yet. For now, mall staff tells us that everything is status quo and the bustling holiday season is proceeding as usual. Meanwhile, the mall has lost a few more tenants in the past few weeks: The 3-D Manaco photo store is gone, as is the Boardwalk burger-and-fry restaurant (previously known as Kraze Burger and then Burger Venue). Also on the way out is Vitamin World, whose parent company has filed Chapter 11.