Remove unnecessary nil checks

agent/consul/server.go

@@ -888,9 +888,6 @@ func (s *Server) KeyManagerLAN() *serf.KeyManager {
 
 // KeyManagerWAN returns the WAN Serf keyring manager
 func (s *Server) KeyManagerWAN() *serf.KeyManager {
-	if s.serfWAN == nil {
-		return nil
-	}
 	return s.serfWAN.KeyManager()
 }
 

agent/router/router.go

@@ -116,9 +116,6 @@ func (r *Router) Shutdown() {
 
 // AddArea registers a new network area with the router.
 func (r *Router) AddArea(areaID types.AreaID, cluster RouterSerfCluster, pinger Pinger, useTLS bool) error {
-	if cluster == nil {
-		return nil
-	}
 	r.Lock()
 	defer r.Unlock()