It was wrong; it was stated as fact by a BBC journalist; but because said journalist also reported someone else saying it was wrong it was not biased.
John Rentoul in the Independent summarises the BBC’s defence of lying for effect misquoting in their news coverage of testimony to the Chilcot enquiry.
Just the facts, Ma’am*
http://www.annaraccoon.com/politics/stick-up-for-the-bbc/
*Which in Aunty-speak seems to equate to ‘things that we have heard of that we like and will promote, vs. stuff we don’t like and will subject to watertight oversight until it goes away’.
Unique.