ProxyGenerationException using 3+ observer

[herecydev]

I've made a gist to demonstrate the ProxyGenerationException I get when trying to mock an interface with multiple observers.

The issue seems to only occur when running at least 3 observers (2 is fine strangely).

The issue lies in this block of code @kkozmic

Raised on CastleProject repo

Currently using Moq 4.2.1502.0911

[stakx]

This is currently being dealt with over at Castle.Core (see castleproject/Core#285), and there is nothing further to do in Moq except to upgrade Castle.Core once a future version is published. I'll track this in #402.