TestDeferredContainer is break on master branch

[NexZhu]

The following test outputs errors on master branch

func TestDeferredContainer(t *testing.T) {
	zero := &DeferredContainer{}
	recepticle := &DeferredContainer{}
	testValueRoundtrip(t, zero, recepticle)
}

Output:

=== RUN   TestDeferredContainer
    roundtrip_test.go:62: &testing.DeferredContainer{Stuff:(*testing.SimpleTypeOne)(nil), Deferred:(*typegen.Deferred)(nil), Value:0x0} != &testing.DeferredContainer{Stuff:(*testing.SimpleTypeOne)(nil), Deferred:(*typegen.Deferred)(0xc000004780), Value:0x0}
    roundtrip_test.go:63: not equal after round trip!
--- PASS: TestDeferredContainer (0.00s)
PASS

[Stebalien]

Looks like this was broken in #16. cc @whyrusleeping?

[whyrusleeping]

Ah, looks like its always allocating a deferred object now. Doesnt seem like wrong behaviour, maybe we should adjust the test?

[Stebalien]

Well, it's not behaving like any of the other "null" cases. But I agree that the current code is probably safer (and doesn't affect the final encoding).