(May 21, 1980) A 26-year-old man was sentenced Tuesday to 15 years to life in prison for murdering his estranged wife’s lover outside a bar in Maspeth, Queens, last October. The man, Andre Fediuk, was convicted March 24 of shooting Walter Cassala, 37 years old, of the Bronx. The shooting took place after Mr. Fediuk read his wife’s diary, which, according to trial testimony, detailed his love affair between Mr. Cassala and Deborah Fediuk.