Rewrite because clippy didn't understand drop

src/peering/fullmesh.rs

@@ -187,6 +187,7 @@ impl FullMeshPeeringStrategy {
 	pub async fn run(self: Arc<Self>) {
 		loop {
 			// 1. Read current state: get list of connected peers (ping them)
+			let (to_ping, to_retry) = {
 				let known_hosts = self.known_hosts.read().unwrap();
 				debug!("known_hosts: {} peers", known_hosts.list.len());
 
@@ -212,7 +213,8 @@ impl FullMeshPeeringStrategy {
 						_ => (),
 					}
 				}
-			drop(known_hosts);
+				(to_ping, to_retry)
+			};
 
 			// 2. Dispatch ping to hosts
 			trace!("to_ping: {} peers", to_retry.len());