Iron Golems cracked textures are mixed up.

I don't know if is intended, but it seems like the iron golem crack textures are sort of mixed-up.  The first crack stage looks similar to the original 2nd stage with some little pixel changes.  The 2nd stage looks lIke the original 3rd stage with a little less cracks.  The last stage stays the same.  (The original first stage is nowhere to be found.)