Some cleanup.

Author: tnull

lightning-invoice/src/utils.rs

@@ -227,7 +227,8 @@ pub struct DefaultRouter<G: Deref<Target = NetworkGraph>, L: Deref> where L::Tar
 }
 
 impl<G: Deref<Target = NetworkGraph>, L: Deref> DefaultRouter<G, L> where L::Target: Logger {
-	/// Creates a new router using the given [`NetworkGraph`], a [`Logger`], and a randomness source `random_seed_bytes`.
+	/// Creates a new router using the given [`NetworkGraph`], a [`Logger`], and a randomness source
+	/// `random_seed_bytes`.
 	pub fn new(network_graph: G, logger: L, random_seed_bytes: [u8; 32]) -> Self {
 		let random_seed_bytes = Mutex::new(random_seed_bytes);
 		Self { network_graph, logger, random_seed_bytes }
@@ -240,12 +241,11 @@ where L::Target: Logger {
 		&self, payer: &PublicKey, params: &RouteParameters, _payment_hash: &PaymentHash,
 		first_hops: Option<&[&ChannelDetails]>, scorer: &S
 	) -> Result<Route, LightningError> {
-		let random_seed_bytes: [u8; 32];
-		{
+		let random_seed_bytes = {
 			let mut locked_random_seed_bytes = self.random_seed_bytes.lock().unwrap();
 			*locked_random_seed_bytes = sha256::Hash::hash(&*locked_random_seed_bytes).into_inner();
-			random_seed_bytes = *locked_random_seed_bytes;
-		}
+			*locked_random_seed_bytes
+		};
 		find_route(payer, params, &*self.network_graph, first_hops, &*self.logger, scorer, &random_seed_bytes)
 	}
 }