Bump golangci-lint + fix lint issues

Signed-off-by: Volker Theile <[email protected]>

Dockerfile.dapper

@@ -7,7 +7,7 @@ RUN zypper -n rm container-suseconnect && \
     zypper -n install git curl docker gzip tar wget awk
 
 ## install golangci
-RUN curl -sSfL https://raw.githubusercontent.com/golangci/golangci-lint/master/install.sh | sh -s v1.55.2
+RUN curl -sSfL https://raw.githubusercontent.com/golangci/golangci-lint/master/install.sh | sh -s v1.57.1
 ## install controller-gen
 RUN go install sigs.k8s.io/controller-tools/cmd/[email protected]
 

cmd/webhook/main.go

@@ -78,7 +78,7 @@ func main() {
 
 	app := cli.NewApp()
 	app.Flags = flags
-	app.Action = func(c *cli.Context) error {
+	app.Action = func(_ *cli.Context) error {
 		setLogLevel(logLevel)
 		err := runWebhookServer(ctx, cfg, &options)
 		return err

main.go

@@ -94,7 +94,7 @@ func main() {
 		},
 	}
 
-	app.Action = func(c *cli.Context) error {
+	app.Action = func(_ *cli.Context) error {
 		initProfiling(&opt)
 		initLogs(&opt)
 		return run(&opt)

pkg/ksmtuned/ksmd.go

@@ -94,7 +94,7 @@ func (k *ksmd) toggleMergeAcrossNodes(ctx context.Context, toggle uint) (err err
 	}
 
 	ctxCancel, cancel := context.WithCancel(ctx)
-	wait.UntilWithContext(ctxCancel, func(ctx context.Context) {
+	wait.UntilWithContext(ctxCancel, func(_ context.Context) {
 		var s *ksmdStatus
 		s, err = k.readKsmdStatus()
 		if err != nil || s.shared+s.sharing+s.unshared < 1 {