Hello, I've noticed that crossbows and wands were not showing ilvl during prepatch.

Checking with GetItemInfo(), their ItemEquipLoc seems to be INVTYPE_RANGEDRIGHT, and for that _G[ItemEquipLoc] is nil, so, the following check in line 140 fails:
(itemEquipLoc and _G[itemEquipLoc])
I was able to fix it by changing it to
(itemEquipLoc and (_G[itemEquipLoc] or itemEquipLoc == "INVTYPE_RANGEDRIGHT"))
but I am not sure if that breaks retail in some way