I'd think this is right, because the answer that gives the 2.5 million loc number also says that this code is descended from the code for Spirit/Oppie and furth

I'd think this is right, because the answer that gives the 2.5 million loc number also says that this code is descended from the code for Spirit/Oppie and further from Soujourner, but the EDL system for Curiosity is so different from the ones for the older rovers, it has to involve a lot of entirely new code.