App Crash when accessing MPIdentityApiRequest.identities

[KristofferHermansen]

Explanation

It seems that the update 8.18.0 changed something regarding to MPIdentityApiRequest.identities.

Right now the property MPIdentityApiRequest.email is defined as nullable, but if the identities property is accessed while the email is set to null, the app results in a crash with the following message: "Could not cast value of type 'NSNull' to 'NSString'."

Steps to reproduce

let identityRequest = MPIdentityApiRequest.withEmptyUser()
identityRequest.email = nil
print(identityRequest.identities)

[KristofferHermansen]

Might be the same issue as described in #250

[KristofferHermansen]

Fixed in #270