Villager to zombie villager conversion can give equipment

When a zombie kills a villager, the new zombie villager sometimes has equipment.

Maybe it is "Works as Intended", but I think that it doesn't make that much sense.

Steps to reproduce:

1. Set difficulty to hard

2. Summon a zombie

3. Summon a villager

4. Let the zombie kill the villager

5. Repeat steps 1-4 until you notice that the zombie villager has equipment