Fix group leaving

src/org/thoughtcrime/securesms/loki/protocol/ClosedGroupUpdateMessageSendJob.kt

@@ -161,7 +161,7 @@ class ClosedGroupUpdateMessageSendJob private constructor(parameters: Parameters
                 }
                 "Info" -> {
                     val name = data.getString("name")
-                    val senderKeys = data.getString("senderKeys").split(" - ").map { ClosedGroupSenderKey.fromJSON(it)!! }
+                    val senderKeys = data.getStringOrDefault("senderKeys", "").split(" - ").mapNotNull { ClosedGroupSenderKey.fromJSON(it) } // Can be empty
                     val members = data.getString("members").split(" - ").map { Hex.fromStringCondensed(it) }
                     val admins = data.getString("admins").split(" - ").map { Hex.fromStringCondensed(it) }
                     kind = Kind.Info(groupPublicKey, name, senderKeys, members, admins)

src/org/thoughtcrime/securesms/loki/protocol/ClosedGroupsProtocol.kt

@@ -150,7 +150,8 @@ object ClosedGroupsProtocol {
         val closedGroupUpdateKind = ClosedGroupUpdateMessageSendJob.Kind.Info(Hex.fromStringCondensed(groupPublicKey),
             name, setOf(), membersAsData, adminsAsData)
         val job = ClosedGroupUpdateMessageSendJob(groupPublicKey, closedGroupUpdateKind)
-        ApplicationContext.getInstance(context).jobManager.add(job)
+        job.setContext(context)
+        job.onRun() // Run the job immediately
         // Delete all ratchets (it's important that this happens after sending out the update)
         sskDatabase.removeAllClosedGroupRatchets(groupPublicKey)
         // Remove the group from the user's set of public keys to poll for if the user is leaving. Otherwise generate a new ratchet and