Fix one of the issues noticed while investigating the report of a
shopkeeper sighing when a hero died without owing anything. If the death
takes place outside of any shop on a level with multiple shopkeepers, the
first one in the fmon list would be the one who had access to the dying
hero's inventory, even if nothing was owed to that one and something was
owed to another shopkeeper. Now the one who is owed gets first chance to
take the hero's possessions.
When dying inside a shop, the keeper of that shop takes control of
the possessions regardless of whether he or anyone else is owed anything.
That hasn't changed, except that if the hero is simutaneoulsy inside
multiple shops (within a wall spot shared by two or more shops) and owes
money to one of them, the one who is owed will take his inventory even if
the other shk is found first.
This doesn't include any changes to feedback given when the hero dies
in the presence of shopkeepers.
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