NEW YORK — Stand-up comedy has never been a safe space for the timid. But after millions of Academy Award viewers saw actor Will Smith slap comedian Chris Rock on stage Sunday — then receive an award — a whole different kind of insecurity came to mind. Comedian Kathy Griffin wondered on Twitter if comedians are safe. “Now we all have to worry about who wants to be the next Will Smith in comedy clubs and theaters,” she wrote. That will be on the minds of the people who take the stage at comedy clubs in the city — and those who run them. In May, the Friars Club will honor comedian Tracy Morgan a…