Current user not set to null when logout request fail

[inDream]

• Skygear SDK Date/Version: 1.4.0
• JS runtime: React Native
• Skygear Server Date/Version: 1.4.0
• Is this a regression?
• Attached logs, screenshots

Expected Results

skygear.auth.currentUser === null

Actual Results

skygear.auth.currentUser === prevUser

Steps to reproduce

1. Login
2. Call skygear.auth.logout() without network

Ref:

skygear-SDK-JS/packages/skygear-core/lib/auth.js

Lines 199 to 211 in 8969e7d

	return this.container.makeRequest('auth:logout', {});
	})
	.then(() => {
	return Promise.all([
	this._setAccessToken(null),
	this._setUser(null)
	]).then(() => null);
	})
	.catch((err) => {
	return this._setAccessToken(null).then(() => {
	return Promise.reject(err);
	});
	});