plugin: use Zones.Contains when any match suffices (#8505)

plugin/hosts/hosts.go

@@ -35,8 +35,7 @@ func (h Hosts) ServeDNS(ctx context.Context, w dns.ResponseWriter, r *dns.Msg) (
 	if zones == nil {
 		zones = plugin.Zones(h.Origins)
 	}
-	zone := zones.Matches(qname)
-	if zone == "" {
+	if !zones.Contains(qname) {
 		// PTR zones don't need to be specified in Origins.
 		if state.QType() != dns.TypePTR {
 			// if this doesn't match we need to fall through regardless of h.Fallthrough

plugin/hosts/hostsfile.go

@@ -202,7 +202,7 @@ func (h *Hostsfile) parse(r io.Reader) *Map {
 
 		for i := 1; i < len(f); i++ {
 			name := plugin.Name(string(f[i])).Normalize()
-			if plugin.Zones(h.Origins).Matches(name) == "" {
+			if !plugin.Zones(h.Origins).Contains(name) {
 				// name is not in Origins
 				continue
 			}