next_inventory
NAME
next_inventory() - return the next object in the same inventory
SYNOPSIS
object next_inventory( object ob );
DESCRIPTION
Return the next object in the same inventory as 'ob'.
Warning: If the object 'ob' is moved by "move_object()", then
"next_inventory()" will return an object from the new inventory.
SEE ALSO
first_inventory(3), all_inventory(3), deep_inventory(3)