Bugfix: AIM: insert items into container in corpse

[inogenous]

Summary

Bugfixes "AIM: Prevent segfault when inserting items into container in corpse"

Purpose of change

• Fixes Using Advanced Inventory to put items into containers on corpses crashes the game. (segmentation fault) #67949 .
• Prevents segfault in AIM when inserting items into a toplevel container that is carried by a corpse.
• How to reproduce issue being resolved:
  1. Stand adjacent to corpse
  2. Corpse is wearing "French maid clothes" (or some other container)
  3. Enter AIM, have "all" on left and "inventory" on right
  4. Navigate to "French maid clothes" on left and press c to open it as container
  5. Switch to right AIM pane and navigate to an item in your inventory, for example "matchbook"
  6. Press enter to move "matchbook" into "French maid clothes"
  7. Segfault

Describe the solution

• Thanks to @andrei8l for pointing out the problem in Using Advanced Inventory to put items into containers on corpses crashes the game. (segmentation fault) #67949 (comment)
• The location for advanced_inv_listitem aim_item previously pointed to a container located at loc_cursor. But this location is the location of the corpse.
• Therefore, this suggested change is to switch the containers relative location:
  • item_location( loc_cursor, loot ) (before): would mean that the container is placed on the same location as the corpse
  • item_location( loc_cursor, it ) (used by this change): is the corpse (it) represented as a container
  • item_location( item_location( loc_cursor, it ), loot ) (used by this change) is then the container loot inside (the corpse represented as a container)

Describe alternatives you've considered

Testing

• Doing the steps in Using Advanced Inventory to put items into containers on corpses crashes the game. (segmentation fault) #67949 no longer causes segfault
• Tested moving items from player inventory into inventory of corpse.
• Tested moving items from player inventory into containers in inventory of corpse.
• Tested moving items from player inventory into containers inside other containers in inventory of corpse.
• Tested moving items from player inventory into containers inside containers inside other containers in inventory of corpse.

Additional context