From cd68c9b00194dc85a68a2657421090b8ef68125b Mon Sep 17 00:00:00 2001
From: Gav Wood <github@gavwood.com>
Date: Fri, 31 Aug 2018 14:32:51 +0200
Subject: [PATCH] Empty becomes (), reflecting convention (#637)

---
 substrate/substrate/runtime/primitives/src/traits.rs | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/substrate/substrate/runtime/primitives/src/traits.rs b/substrate/substrate/runtime/primitives/src/traits.rs
index b64aa678f2..e544bca32d 100644
--- a/substrate/substrate/runtime/primitives/src/traits.rs
+++ b/substrate/substrate/runtime/primitives/src/traits.rs
@@ -104,8 +104,7 @@ pub struct Identity;
 impl<T> Convert<T, T> for Identity {
 	fn convert(a: T) -> T { a }
 }
-pub struct Empty;
-impl<T> Convert<T, ()> for Empty {
+impl<T> Convert<T, ()> for () {
 	fn convert(_: T) -> () { () }
 }