apply suggestions from code review

Co-authored-by: Ivan FB <128452529+Ivansete-status@users.noreply.github.com>

Author: chaitanyaprem

waku/discovery/waku_kademlia.nim

@@ -1,7 +1,7 @@
 {.push raises: [].}
 
+import std/[options, sequtils]
 import
-  std/[options, sequtils],
   chronos,
   chronicles,
   results,
@@ -110,7 +110,7 @@ proc extractMixPubKey(service: ServiceInfo): Option[Curve25519Key] =
 
   let key = intoCurve25519Key(service.data)
   debug "successfully extracted mix pub key", keyHex = byteutils.toHex(key)
-  some(key)
+  return some(key)
 
 proc remotePeerInfoFrom(record: ExtendedPeerRecord): Option[RemotePeerInfo] =
   debug "processing kademlia record",
@@ -240,8 +240,8 @@ proc runDiscoveryLoop(
           info "found mix peers via targeted kademlia lookup", count = found
 
       await sleepAsync(interval)
-  except CancelledError:
-    debug "extended kademlia discovery loop cancelled"
+  except CancelledError as e:
+    debug "extended kademlia discovery loop cancelled", error = e.msg
   except CatchableError as e:
     error "extended kademlia discovery loop failed", error = e.msg
 

waku/waku_mix/protocol.nim

@@ -62,7 +62,7 @@ proc processBootNodes(
 
     let mixPubInfo = MixPubInfo.init(peerId, multiAddr, node.pubKey, peerPubKey.skkey)
     mix.nodePool.add(mixPubInfo)
-    count += 1
+    count.inc()
 
     peermgr.addPeer(
       RemotePeerInfo.init(peerId, @[multiAddr], mixPubKey = some(node.pubKey))