Fixed #177

Author: ENikS

src/UnityContainer.Implementation.cs

@@ -112,7 +112,7 @@ private UnityContainer(UnityContainer parent)
             _isExplicitlyRegistered = _parent._isExplicitlyRegistered;
             IsTypeExplicitlyRegistered = _parent.IsTypeExplicitlyRegistered;
 
-            GetRegistration = _parent.GetRegistration;
+            GetRegistration = (t, n) => _parent.GetRegistration(t, n);
             Register = CreateAndSetOrUpdate;
             GetPolicy = parent.GetPolicy;
             SetPolicy = CreateAndSetPolicy;