Apply go fix modernizations

main.go

@@ -14,10 +14,10 @@ import (
 	"syscall"
 	"time"
 
-	"github.com/gopatchy/artnet"
 	"github.com/gopatchy/artmap/config"
 	"github.com/gopatchy/artmap/remap"
 	"github.com/gopatchy/artmap/senders"
+	"github.com/gopatchy/artnet"
 	"github.com/gopatchy/sacn"
 )
 
@@ -87,7 +87,7 @@ func main() {
 		if *artnetBroadcast == "auto" {
 			broadcasts = detectBroadcastAddrs()
 		} else {
-			for _, addrStr := range strings.Split(*artnetBroadcast, ",") {
+			for addrStr := range strings.SplitSeq(*artnetBroadcast, ",") {
 				addrStr = strings.TrimSpace(addrStr)
 				addr, err := parseTargetAddr(addrStr, artnet.Port)
 				if err != nil {
@@ -182,7 +182,7 @@ func main() {
 		if err != nil {
 			log.Fatalf("[sacn] failed to create receiver: %v", err)
 		}
-		receiver.SetHandler(func(src *net.UDPAddr, pkt interface{}) {
+		receiver.SetHandler(func(src *net.UDPAddr, pkt any) {
 			if data, ok := pkt.(*sacn.DataPacket); ok {
 				app.HandleSACN(src, data)
 			}
@@ -489,7 +489,7 @@ func detectLocalInterface(broadcast net.IP) (net.IP, net.HardwareAddr) {
 			}
 
 			bcast := make(net.IP, 4)
-			for i := 0; i < 4; i++ {
+			for i := range 4 {
 				bcast[i] = ip4[i] | ^mask[i]
 			}
 
@@ -540,7 +540,7 @@ func detectBroadcastAddrs() []*net.UDPAddr {
 			}
 
 			broadcast := make(net.IP, 4)
-			for i := 0; i < 4; i++ {
+			for i := range 4 {
 				broadcast[i] = ip4[i] | ^mask[i]
 			}