<Someone> submitted the following bug report:
> An object and a pit are occupying the same square. I try to kick
> the object out of the square, but "You can't kick something
> that's in a pit!"
>
> I step into the square and escape the pit, but I can pick up the
> object, so maybe it's not in the pit after all.
>
This patch does *not* address this part of the bug report:
> If it's in the pit and it's a cockatrice corpse, should I die
> from landing on it when I fall into the pit?
dae1b81029