title: Null pointer on Google Play Services 11.8.0
body: <p>I just released a beta with Google Play Services 11.8.0 and started getting this crash on Crashlytics. Anyone else experienced this?</p>
  
  <pre><code>Fatal Exception: java.lang.NullPointerException: Attempt to invoke virtual method 'com.google.android.gms.tasks.Task com.google.android.gms.common.api.GoogleApi.zzb(com.google.android.gms.common.api.internal.zzdd)' on a null object reference
         at com.google.android.gms.internal.zzdvv.zzb(Unknown Source)
         at com.google.android.gms.internal.zzdwc.zza(Unknown Source)
         at com.google.firebase.auth.FirebaseAuth.signInAnonymously(Unknown Source)
  </code></pre>
  
  <p>Edit: As you can tell this isn't a null pointer on my code. It is all inside Google Play Services. </p>