A James Madison University student was killed early yesterday in Harrisonburg, Va., when the canoe he was riding in capsized, state emergency officials said. His body was found by search teams at daybreak.The man, who was not identified yesterday, and two other JMU students, were trying to ride the canoe down a drainage ditch swollen from the hurricane about 2:30 a.m., said Frank Gilmore, a spokesman for the state's emergency operations center. Moments after they launched the canoe, it capsized.