Right clicking with a helmet causes a crash

Put the summary of the bug you're having here
Just a crash with right clicking diamond helmet
What I expected to happen was...:
I just right clicked with a diamond helmet and my minecraft crashed.

What actually happened was...:
I had a diamond helmet in my hot bar and in my hand. And i accidentaly right clicked and my minecraft crashed

Steps to Reproduce:
1. Got A Diamond Helmet.
2. Had it in my hotbar
3. right clicked with diamond helmet in your hand.
4. Minecraft goes to dirt background.
5. Minecraft Crashes