From 4ad8b95d61f2001de1429a030c76e1759fe2529a Mon Sep 17 00:00:00 2001
From: Gav <gavin@parity.io>
Date: Sat, 10 Mar 2018 19:23:38 +0100
Subject: [PATCH] Safe panic.

---
 substrate/demo/primitives/src/transaction.rs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/substrate/demo/primitives/src/transaction.rs b/substrate/demo/primitives/src/transaction.rs
index e75b67d745..ae8dd0bd55 100644
--- a/substrate/demo/primitives/src/transaction.rs
+++ b/substrate/demo/primitives/src/transaction.rs
@@ -294,7 +294,7 @@ impl Slicable for Function {
 				to.using_encoded(|s| v.extend(s));
 				amount.using_encoded(|s| v.extend(s));
 			}
-			_ => {}
+			_ => { unimplemented!() }
 		}
 
 		v