(October 2, 2010 at 12:47 pm)Existentialist Wrote: 1. A restatement of a text or passage in another form or other words, often to clarify meaning.Note the word "often". Put there to show the most common use of paraphrasing, but by no means the *only* use.
So in this case, it wasn't a misquote, it was a paraphrase. It would only be a misquote if you were attributing the exact quote to the person, rather than changing the quote to suit the conversation.