race condition; cctor caching property binder exception

[jakubmisek]

Message: Index was outside the bounds of the array.
System.Collections.Generic.Dictionary`2.Insert(TKey key, TValue value, Boolean add) System.Collections.Generic.Dictionary`2.set_Item(TKey key, TValue value):9

Pchp.Core.Dynamic.BinderFactory.GetField(String name, RuntimeTypeHandle classContext, RuntimeTypeHandle returnType, AccessMask access):62
..cctor()

PeachPie expects this is executed on a single thread, but is it?

[jakubmisek]

thread-safety for BinderFactory