Fix inconsistent errored properties in stylelint.lint() return value

[ybiquitous]

Which issue, if any, is this issue related to?

Closes #6982

Is there anything in the PR that needs further explanation?

This pull request fixes the errored property calculation in prepareReturnValue().

---

Internal details:

standalone() just returns a return value from prepareReturnValue(). This value includes a correct errored property.

stylelint/lib/standalone.js

Lines 268 to 272 in 9ddba42

	const result = prepareReturnValue(stylelintResults, maxWarnings, formatterFunction, cwd);
	debug(`Linting complete in ${Date.now() - startTime}ms`);
	return result;

stylelint/lib/prepareReturnValue.js

Lines 40 to 48 in 9ddba42

	/** @type {LinterResult} */
	const returnValue = {
	cwd,
	errored,
	results: [],
	output: '',
	reportedDisables: [],
	ruleMetadata: getRuleMetadata(stylelintResults),
	};

Before this pull request's change, returnValue.errored could differ from returnValue.results[*].errored.

stylelint/lib/prepareReturnValue.js

Line 59 in 9ddba42

returnValue.results = stylelintResults;

[changeset-bot]

🦋 Changeset detected

Latest commit: 9ddba42

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 1 package

Name	Type
stylelint	Patch

Not sure what this means? Click here to learn what changesets are.

Click here if you're a maintainer who wants to add another changeset to this PR

[jeddy3]

Thank you for discovering the cause.

LGTM!