Illusions are breaking the add-on

[Meivyn]

This error happens when you try to preview an illusion from the appearances collection with DressUp:

1x ...ceBlizzard_Collections\Blizzard_Wardrobe.lua:1495: attempt to index field 'ModelScene' (a nil value)
...ceBlizzard_Collections\Blizzard_Wardrobe.lua:1495: in function `WardrobeCollectionFrame_GetWeaponInfoForEnchant'
...ceBlizzard_Collections\Blizzard_Wardrobe.lua:1958: in function <...ceBlizzard_Collections\Blizzard_Wardrobe.lua:1930>

Locals:
slot = "SECONDARYHANDSLOT"
(*temporary) = nil
(*temporary) = nil
(*temporary) = true
(*temporary) = false
(*temporary) = nil
(*temporary) = nil
(*temporary) = nil
(*temporary) = nil
(*temporary) = nil
(*temporary) = "attempt to index field 'ModelScene' (a nil value)"

I had no other add-on enabled other than BugGrabber/BugSack and DressUp.

Illusions aren't handled the same way as other models in the dressing frame (from the collection).