fs: simplify realpathSync

[himself65]

Checklist

• make -j4 test (UNIX), or vcbuild test (Windows) passes
• tests and/or benchmarks are included
• commit message follows commit guidelines

[himself65]

note that getOptions will returns defaultOptions if options is nil

node/lib/internal/fs/utils.js

Lines 274 to 278 in 1e8cb08

	function getOptions(options, defaultOptions) {
	if (options === null || options === undefined ||
	typeof options === 'function') {
	return defaultOptions;
	}

[bnoordhuis]

There's another simplification you can make on line 1633:

  if (isWindows && !knownHard[base]) {

!knownHard[base] is always true because knownHard is still an empty object at that point.

[himself65]

if (isWindows && !knownHard[base]) {

I see, thanks a lot

[nodejs-github-bot]

CI: https://ci.nodejs.org/job/node-test-pull-request/33286/

[lpinca]

Landed in b8f34b2.