Object.create({} | null)

**TypeScript Version:** 2.2.0

**Code:**
```ts
Object.create(parent && parent._attributeListMap || null)
```

**Expected behavior:**
Ok

**Actual behavior:**
2.2.0 - `error TS2345: Argument of type '{ [elName: string]: Object; } | null' is not assignable to parameter of type 'object'`

2.1.5 - Ok