Condensing Spell List in Battle

1) regarding Gi Nattak's changes without this patch: is the spell the CaaM casting actually known (as in learned) by any of your active, battle-present party?  if not, try giving it to somebody, and see whether it's still free.

2) regarding the patch: what's to stop the .findSpell loop from going past the end of the Magic list and reading gibberish when the spell isn't known?  (and because of the intent of the patch, i.e. operating on everybody's separate Magic list, it's enough for the one character to not know it.)