Player takes void damage too quickly

Summary: If a player is falling through the void, the player will take void damage too quickly. Other mobs are not affected. Damage is at 16 hit points a second compared to 8 hit points a second.

To Reproduce:
1. Create a superflat world with cheats enabled, I use The Void preset.
2. If you have a preset other than The Void, go into creative mode: /gamemode c, and dig a hole to the void.
3. Go into survival mode: /gamemode s and fall through the hole, or on The Void, walk off the platform.