satisfy full linter

pkg/es/errors.go

@@ -27,22 +27,20 @@ import (
 func esErrorString(err error) error {
 	msg := err.Error()
 
-	switch e := err.(type) {
+	//nolint:gocritic
+	switch errVal := err.(type) {
 	case *types.ElasticsearchError:
 		var causes strings.Builder
 
-		for _, cause := range e.ErrorCause.RootCause {
-			// FIXME: re-activate linter here, see https://github.com/golangci/golangci-lint/issues/6662
-			//nolint:staticcheck
-			causes.WriteString(fmt.Sprintf("%s\n", *cause.Reason))
+		for _, cause := range errVal.ErrorCause.RootCause {
+			fmt.Fprintf(&causes, "%s\n", *cause.Reason)
 		}
 
-		if e.ErrorCause.Reason != nil {
-			msg = *e.ErrorCause.Reason + ": " + causes.String()
+		if errVal.ErrorCause.Reason != nil {
+			msg = *errVal.ErrorCause.Reason + ": " + causes.String()
 		} else {
-			msg = fmt.Sprintf("http status %d: ", e.Status)
+			msg = fmt.Sprintf("http status %d: ", errVal.Status)
 		}
-
 	}
 
 	return errors.New(msg)