cannot put horse armor/saddles on horses, plz fix this!!

i expected to see a horse with horse armor and a horse saddle

What actually happened was, i was trying to play the latest snapshot. and i spawned a horse... i could not put the armor OR the saddle on!

Steps to Reproduce:
1. spawn/find a horse
2. try and put a horse saddle or horse armor on it
3. It will not work