Fix issue with auto_expand_chaining

[nazarkryp]

Important note

When getting user by id (InstaApi.UserProcessor.GetUserInfoByIdAsync(long)) sometimes you get an error: Error converting value {null} to type 'System.Boolean'. Path 'user.auto_expand_chaining'

I've:

• [x] {Searched} in Issues
• [x] {Checked} Example projects
• [x] {Read} wiki pages

Issue category

• [x] Bug

Language

• [x] C#

Usage

• [x] Universal Windows Platform [UWP]

Operating System

• [x] Windows