chore: fix lint errors (#2520)

zrpc/resolver/internal/directbuilder.go

@@ -11,12 +11,13 @@ type directBuilder struct{}
 
 func (d *directBuilder) Build(target resolver.Target, cc resolver.ClientConn, _ resolver.BuildOptions) (
 	resolver.Resolver, error) {
-	var addrs []resolver.Address
 	endpoints := strings.FieldsFunc(targets.GetEndpoints(target), func(r rune) bool {
 		return r == EndpointSepChar
 	})
+	endpoints = subset(endpoints, subsetSize)
+	addrs := make([]resolver.Address, 0, len(endpoints))
 
-	for _, val := range subset(endpoints, subsetSize) {
+	for _, val := range endpoints {
 		addrs = append(addrs, resolver.Address{
 			Addr: val,
 		})

zrpc/resolver/internal/kube/eventhandler.go

@@ -115,7 +115,7 @@ func (h *EventHandler) Update(endpoints *v1.Endpoints) {
 }
 
 func (h *EventHandler) notify() {
-	var targets []string
+	targets := make([]string, 0, len(h.endpoints))
 
 	for k := range h.endpoints {
 		targets = append(targets, k)