So, if anyone “leaked” anything here, then what was leaked is the information that Wilson's wife, whatever her name, was a CIA agent. So, the leaker isn't Wilson but Mr. X, and we're none the wiser.
"So, the leaker isn't Wilson but Mr. X, and we're none the wiser."
Novak is being deliberately obtuse, but that's the way I read it as well.
The "primary source" provided a waiver to Fitzgerald, but apparently not to Novak.