Combine Weapon Slot Lingers

[AyserJamshidi]

Reproduce:

• Get an item that has optional RNG manastone slots (In this case we'll be using Sauro Guard's Aethercannon
• Acquire a 4 slot RNG weapon
• Acquire a 5 slot RNG weapon
• Combine the 4 slot on top of the 5 slot
• Uncombine

Outcome:
4 slot aethercannon with an unusable X amount of optional slots under the main slots.

[AyserJamshidi]

Build 886 includes a fix for this. Weapons will now have their weapon combine slot set to 0 upon uncombine after all item stones have been removed.