'Laverne & Shirley' 'Squiggy' Star David Lander Dead at 73 from Multiple Sclerosis

David Lander, the actor who played Squiggy on "Laverne & Shirley" has died, TMZ has learned. David's wife, Kathy, tells us he died Friday at around 6:30 PM at Cedars-Sinai Medical Center in L.A. ... as a result of complications from multiple…