Run modernize (#21546)

`go run golang.org/x/tools/gopls/internal/analysis/modernize/cmd/modernize@latest -fix -test ./...` executed.

`go generate ./...` ran afterwards to keep generated.

cmd/erasure-sets.go

@@ -392,7 +392,7 @@ func newErasureSets(ctx context.Context, endpoints PoolEndpoints, storageDisks [
 	var lk sync.Mutex
 	for i := range setCount {
 		lockerEpSet := set.NewStringSet()
-		for j := 0; j < setDriveCount; j++ {
+		for j := range setDriveCount {
 			wg.Add(1)
 			go func(i int, endpoint Endpoint) {
 				defer wg.Done()
@@ -415,7 +415,7 @@ func newErasureSets(ctx context.Context, endpoints PoolEndpoints, storageDisks [
 			defer wg.Done()
 
 			var innerWg sync.WaitGroup
-			for j := 0; j < setDriveCount; j++ {
+			for j := range setDriveCount {
 				disk := storageDisks[i*setDriveCount+j]
 				if disk == nil {
 					continue
@@ -593,7 +593,6 @@ func (s *erasureSets) StorageInfo(ctx context.Context) StorageInfo {
 
 	g := errgroup.WithNErrs(len(s.sets))
 	for index := range s.sets {
-		index := index
 		g.Go(func() error {
 			storageInfos[index] = s.sets[index].StorageInfo(ctx)
 			return nil
@@ -618,7 +617,6 @@ func (s *erasureSets) LocalStorageInfo(ctx context.Context, metrics bool) Storag
 
 	g := errgroup.WithNErrs(len(s.sets))
 	for index := range s.sets {
-		index := index
 		g.Go(func() error {
 			storageInfos[index] = s.sets[index].LocalStorageInfo(ctx, metrics)
 			return nil
@@ -641,7 +639,6 @@ func (s *erasureSets) Shutdown(ctx context.Context) error {
 	g := errgroup.WithNErrs(len(s.sets))
 
 	for index := range s.sets {
-		index := index
 		g.Go(func() error {
 			return s.sets[index].Shutdown(ctx)
 		}, index)
@@ -705,7 +702,6 @@ func (s *erasureSets) getHashedSet(input string) (set *erasureObjects) {
 func listDeletedBuckets(ctx context.Context, storageDisks []StorageAPI, delBuckets *xsync.MapOf[string, VolInfo], readQuorum int) error {
 	g := errgroup.WithNErrs(len(storageDisks))
 	for index := range storageDisks {
-		index := index
 		g.Go(func() error {
 			if storageDisks[index] == nil {
 				// we ignore disk not found errors