chore: nit

cmd/skaffold/app/cmd/filter.go

@@ -68,13 +68,15 @@ func NewCmdFilter() *cobra.Command {
 // Unlike `skaffold debug`, this filtering affects all images and not just the built artifacts.
 func runFilter(ctx context.Context, out io.Writer, debuggingFilters bool, postRenderer string, buildArtifacts []graph.Artifact) error {
 	return withRunner(ctx, out, func(r runner.Runner, configs []util.VersionedConfig) error {
-
 		var manifestList manifest.ManifestList
 		var err error
 		if postRenderer != "" {
 			cmd := exec.CommandContext(ctx, postRenderer)
 			cmd.Stdin = os.Stdin
 			stdoutPipe, err := cmd.StdoutPipe()
+			if err != nil {
+				return fmt.Errorf("running post-renderer: %w", err)
+			}
 			err = cmd.Start()
 			if err != nil {
 				return fmt.Errorf("running post-renderer: %w", err)

cmd/skaffold/app/cmd/filter_test.go

@@ -97,7 +97,7 @@ spec:
 			})
 			t.SetStdin([]byte(test.manifestsStr))
 			var b bytes.Buffer
-			err := runFilter(context.TODO(), &b, false, test.buildArtifacts)
+			err := runFilter(context.TODO(), &b, false, "", test.buildArtifacts)
 			t.CheckNoError(err)
 			t.CheckDeepEqual(test.expected, b.String(), testutil.YamlObj(t.T))
 		})

pkg/skaffold/helm/bin_test.go

@@ -117,7 +117,7 @@ func TestGenerateSkaffoldFilter(t *testing.T) {
 				manifestsOverrides: map[string]string{},
 			}
 
-			result := generateSkaffoldFilter(h, test.buildFile)
+			result := generateSkaffoldFilter(h, test.buildFile, []string{})
 			t.CheckDeepEqual(test.result, result)
 		})
 	}