fix staticcheck for kubectl pkg files

Kubernetes-commit: f6b3c5fb3f78d1d2736fe97326b976783b34f6b7

pkg/cmd/get/customcolumn.go

@@ -162,8 +162,8 @@ func (s *CustomColumnsPrinter) PrintObj(obj runtime.Object, out io.Writer) error
 		return fmt.Errorf(printers.InternalObjectPrinterErr)
 	}
 
-	if w, found := out.(*tabwriter.Writer); !found {
+	if _, found := out.(*tabwriter.Writer); !found {
-		w = printers.GetNewTabWriter(out)
+		w := printers.GetNewTabWriter(out)
 		out = w
 		defer w.Flush()
 	}

pkg/cmd/get/get_test.go

@@ -55,7 +55,6 @@ import (
 )
 
 var (
-	openapiSchemaPath  = filepath.Join("..", "..", "..", "testdata", "openapi", "swagger.json")
 	grace              = int64(30)
 	enableServiceLinks = corev1.DefaultEnableServiceLinks
 )
@@ -90,6 +89,7 @@ func testComponentStatusData() *corev1.ComponentStatusList {
 // Verifies that schemas that are not in the master tree of Kubernetes can be retrieved via Get.
 func TestGetUnknownSchemaObject(t *testing.T) {
 	t.Skip("This test is completely broken.  The first thing it does is add the object to the scheme!")
+	var openapiSchemaPath = filepath.Join("..", "..", "..", "testdata", "openapi", "swagger.json")
 	tf := cmdtesting.NewTestFactory().WithNamespace("test")
 	defer tf.Cleanup()
 	_, _, codec := cmdtesting.NewExternalScheme()

pkg/cmd/testing/fake.go

@@ -18,7 +18,6 @@ package testing
 
 import (
 	"bytes"
-	"errors"
 	"fmt"
 	"io/ioutil"
 	"os"
@@ -271,8 +270,6 @@ func convertExternalNamespacedType2ToInternalNamespacedType(in *ExternalNamespac
 	return nil
 }
 
-var errInvalidVersion = errors.New("not a version")
-
 // ValidVersion of API
 var ValidVersion = "v1"