Update chain/network/src/routing.rs

Co-authored-by: Aleksey Kladov <aleksey.kladov@gmail.com>

chain/network/src/routing.rs

@@ -916,7 +916,7 @@ impl Graph {
             let mut peer_set: HashSet<PeerId> = HashSet::new();
             if let Some(neighbors) = self.adjacency.get(&source_id) {
                 let mut id = 0;
-                for neighbor in neighbors {
+                for (id, neighbor) in neighbors.iter().enumerate().take(128) {
                     if id >= 128 {
                         break;
                     }