App crashes if we move directly to chatlist from sidebar

[Assadbintahir]

If chat windows is opened from contacts, App crashes if we move directly to chatlist from sidebar

Steps:

• Install latest version from play store
• Once the application is opened, go to contacts.
• Open a chat window
• Wait for the last seen
• Now open sidebar and go to chats
• App crashes with log

[Assadbintahir]

I have fixed this issue.

Code will be part of pull request

[jekram]

Thanks