fix(kademlia): closest peer must first detect if the peer should be s… (#4985)

Author: istae

pkg/topology/kademlia/kademlia.go

@@ -1283,15 +1283,14 @@ func (k *Kad) ClosestPeer(addr swarm.Address, includeSelf bool, filter topology.
 
 	// iterate starting from bin 0 to the maximum bin
 	err := k.EachConnectedPeerRev(func(peer swarm.Address, bin uint8) (bool, bool, error) {
+		if swarm.ContainsAddress(skipPeers, peer) {
+			return false, false, nil
+		}
 
 		if bin > prox && !closest.IsZero() {
 			return true, false, nil
 		}
 
-		if swarm.ContainsAddress(skipPeers, peer) {
-			return false, false, nil
-		}
-
 		if closest.IsZero() {
 			closest = peer
 			return false, false, nil