I would think that I’d have an answer to that question on the tip of my tongue. Oddly, I do not. Probably because I have my doubts that the tiny mention of King (by reference) has anything further to do with the book - other than by tangent (and even that in the extreme.)
The above review does bring Stephen King into relation with House of Leaves, but is entirely meta information.
Mind you, it’s a little tantalizing to imagine - in keeping with the notion that everything in the end may only exist in Truant’s mind - that perhaps Danielewski is a figment of Stephen King’s mind. Somehow, the idea of a novel extended further into the real world in that manner is deliciously mind-blowing.
However, my honest reply to your question is that I don’t know why I think that. It was a thought experiment - possibly without foundation.