fix crash when not using play services

app/src/play/java/com/vitorpamplona/amethyst/service/notifications/PushNotificationUtils.kt

@@ -1,5 +1,6 @@
 package com.vitorpamplona.amethyst.service.notifications
 
+import android.util.Log
 import com.google.firebase.messaging.FirebaseMessaging
 import com.vitorpamplona.amethyst.AccountInfo
 import kotlinx.coroutines.Dispatchers
@@ -8,6 +9,10 @@ import kotlinx.coroutines.tasks.await
 class PushNotificationUtils {
     suspend fun init(accounts: List<AccountInfo>) = with(Dispatchers.IO) {
         // get user notification token provided by firebase
-        RegisterAccounts(accounts).go(FirebaseMessaging.getInstance().token.await())
+        try {
+            RegisterAccounts(accounts).go(FirebaseMessaging.getInstance().token.await())
+        } catch (e: Exception) {
+            Log.e("Firebase token", "failed to get firebase token", e)
+        }
     }
 }