Fast-casual chain Smashburger has been closing restaurants all over Montgomery County, including one in downtown Bethesda last winter and two more in Gaithersburg and Germantown over the past few weeks. Julian Goodman, the company’s local franchisee, says all three restaurants were company-owned and their locations were not the right fit. Goodman, who opened his first Smashburger at The Galvan on Rockville Pike last year, says he’s actively looking for more locations in this area.