STUNTMAN Jay Currin, 34, performing a 60-foot dive off a Malibu, Calif., cliff was killed Monday when he missed the airbag intended to cushion his fall . . . BRITISH JOURNALIST Harold King, who covered the battle of Stalingrad and forged close ties with French leader Charles de Gaulle, has died at age 91 in Paris . . . THE SENATE approved legislation bringing older workers' job benefits under the protective umbrella of the Age Discrimination in Employment Act. The bill, sent to the House Monday on a 94-1 vote, is aimed at reversing the effects of a Supreme Court decision which held that employee benefits were not covered by the 1967 civil rights law.