From a bug report, a monster who eats a lizard
corpse in order to cure confusion was treated the same as one who did so
to cure petrification, losing intrinsic speed in the process. In the same
report by <l>, monsters wouldn't eat lizard corpses to cure being stunned,
and those who ate them for another reason weren't cured of stunning, even
though the hero gets that benefit. While fixing those, I added some code
to let monsters who are carrying tins of lizard or acidic monster use them
if they're also carrying a tin opener, dagger, or knife. I don't think
any monsters except for nymphs are willing to pick up tins, so it won't
have much effect. It now works for nymphs though.
Examining the code while testing showed that mon_consume_unstone()
has been accessing the potion (acid) or corpse (lizard or acidic monster)
after the item had been used up, so that has been fixed too. I never saw
any detectable problems due to this, but folks using a debugging malloc
implementation which overwrites freed memory may have not been suffering
collateral acid damage or receiving intended confusion cure, or perhaps
did get either or both of those effects when they shouldn't have. Since
it only applied to monsters it wouldn't have been easy to observe.
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