Fixing warnings (#1321)

sync/src/chain.rs

@@ -1170,7 +1170,7 @@ impl ChainSync {
 								.expect("chain.tree_route and chain.find_uncles only return hahses of blocks that are in the blockchain. qed.")).number();
 							hash_rlp.append(&block_hash);
 							hash_rlp.append(&number);
-							rlp_stream.append_raw(&hash_rlp.as_raw(), 1);
+							rlp_stream.append_raw(hash_rlp.as_raw(), 1);
 						}
 						Some(rlp_stream.out())
 					}

sync/src/lib.rs

@@ -124,12 +124,11 @@ impl EthSync {
 	/// Creates and register protocol with the network service
 	pub fn new(config: SyncConfig, chain: Arc<Client>) -> Arc<EthSync> {
 		let sync = ChainSync::new(config, chain.deref());
-		let sync = Arc::new(EthSync {
+		Arc::new(EthSync {
 			chain: chain,
 			sync: RwLock::new(sync),
 			io_channel: RwLock::new(IoChannel::disconnected()),
-		});
-		sync
+		})
 	}
 
 	/// Register protocol with the network service