It turns out that there were a bunch more monsters with the corpse-
conveys-stoning-resistance flag than just green mold. Instead of
stripping it off, give them (including green mold) a chance to confer
timed resistance against stoning and also against acid.
All of these can convey either of those two resistances. Like other
intrinsics obtained via eating, at most one can be obtained from any
given corpse.
green mold, acid blob, spotted jelly, ochre jelly, black naga,
yellow dragon, Chromatic Dragon
These can confer temporary stoning resistance but not acid resistance:
lizard, chickatrice, cockatrice, gargoyle, winged gargoyle,
xorn, Medusa
There aren't any that confer just acid resistance without a chance for
stoning resistance.
The effect lasts for 3d6 turns, or is extended by 3d6 more if randomly
chosen and applied when already in effect.
Having temporary acid resistance time out during another meal when
eating a corpse that ends up conferring acid resistance seems strange.
The protection against acid is granted at the start of the meal and
continues to the end (in regards to eating, not external attacks) even
when the intrinisic is lost in between. I'm not sure whether that
needs some form of fixing, and if so, what that fixing should be.
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