reflection detection doesn't work for structs containing functions which return structs

[lu4p]

While debugging #690 I found another case where reflection detection breaks down.

This is mostly a constructed esoteric case, however I want to save it for future reference.

This:

func closure() {
	type gobAlias struct {
		Security func() struct {
			Pad bool
		}
	}

	alias := gobAlias{}

	gob.NewEncoder(os.Stdout).Encode(alias)

	outer := func() func() struct{ Pad bool } {
		return func() struct{ Pad bool } {
			return struct{ Pad bool }{Pad: true}
		}
	}

	alias.Security = outer()
}

becomes:

func j4wwfVoxrQ3U() {
	type gobAlias struct {
		Security func() struct {
			CyKzfu_6PMml bool
		}
	}

	zHwfgoTGbS := gobAlias{}

	 /*line pO5sQyOpjxG.go:1*/ gob.Z86VmnB5d5(os.E09Xl1y).Encode(zHwfgoTGbS)

	lSqYMFQpWJG := func() func() struct{ CyKzfu_6PMml bool } {
		return func() struct{ CyKzfu_6PMml bool } {
			return struct{ CyKzfu_6PMml bool }{CyKzfu_6PMml: true}
		}
	}

	zHwfgoTGbS.Security =  /*line FquOVyLxB.go:1*/ lSqYMFQpWJG()
}

In an ideal world the return type shouldn't be obfuscated anywhere.