villager trading while LAN-ing 1.7.2

Put the summary of the bug you're having here

What I expected to happen was...:
Describe what you thought should happen here
trading with a villager.

What actually happened was...:
Describe what happened here
i was trading with a villager when i was LAN-ing with my buddy, when i traded the item with the villager i crashed

Steps to Reproduce:
1. Put a step by step guide on how to trigger the bug here
2. ...open a LAN world
3. ...then trade with a villager (with another player online)
4. ...the LAN will crash, but not the client