[BUG][FIX]UndefinedObject(Object)>>doesNotUnderstand: #at:ifAbsent: ( [sm][et] Works; attached .cs.gz )

[frank at angband.za.org]

I sent this before, but BFAV didn't seem to pick it up. Or something.

At any rate, attached is Hans-Martin's fix in changeset format.

frank
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