Leaf blocks, when destroyed by fire on top of the block, play the sound of wool being broken.

What I expected to happen was...:
No sound to play.

What actually happened was...:
Wool sound played when top of leaf block was destroyed by fire.

Steps to Reproduce:
1. Generate a new world in any pre-release version.

2. Place any leaf block and ignite the top on fire.

3. The sound of wool breaking can be heard once the leaf block is destroyed by the fire, but only on the top of the block.