linting fixes

Signed-off-by: Vasiliy Tolstov <v.tolstov@unistack.org>

network/resolver/dns/dns.go

@@ -38,6 +38,7 @@ func (r *Resolver) Resolve(name string) ([]*resolver.Record, error) {
 		return nil, err
 	}
 
+	//nolint:prealloc
 	var records []*resolver.Record
 
 	for _, answer := range rec.Answer {

network/resolver/dnssrv/dnssrv.go

@@ -17,7 +17,7 @@ func (r *Resolver) Resolve(name string) ([]*resolver.Record, error) {
 	if err != nil {
 		return nil, err
 	}
-	var records []*resolver.Record
+	records := make([]*resolver.Record, len(addrs))
 	for _, addr := range addrs {
 		address := addr.Target
 		if addr.Port > 0 {