few little fixes

libsession/src/main/java/org/session/libsession/messaging/messages/control/ClosedGroupControlMessage.kt

@@ -38,7 +38,7 @@ class ClosedGroupControlMessage() : ControlMessage() {
         object MemberLeft : Kind()
         object EncryptionKeyPairRequest: Kind()
 
-        val description: String = run {
+        val description: String =
             when(this) {
                 is New -> "new"
                 is Update -> "update"
@@ -49,7 +49,6 @@ class ClosedGroupControlMessage() : ControlMessage() {
                 MemberLeft -> "memberLeft"
                 EncryptionKeyPairRequest -> "encryptionKeyPairRequest"
             }
-        }
     }
 
     companion object {

libsession/src/main/java/org/session/libsession/messaging/messages/control/DataExtractionNotification.kt

@@ -14,12 +14,11 @@ class DataExtractionNotification(): ControlMessage() {
         class Screenshot() : Kind()
         class MediaSaved(val timestanp: Long) : Kind()
 
-        val description: String = run {
+        val description: String =
             when(this) {
                 is Screenshot -> "screenshot"
                 is MediaSaved -> "mediaSaved"
             }
-        }
     }
 
     companion object {
@@ -27,12 +26,11 @@ class DataExtractionNotification(): ControlMessage() {
 
         fun fromProto(proto: SignalServiceProtos.Content): DataExtractionNotification? {
             val dataExtractionNotification = proto.dataExtractionNotification ?: return null
-            val kind: Kind
-            when(dataExtractionNotification.type) {
-                SignalServiceProtos.DataExtractionNotification.Type.SCREENSHOT -> kind = Kind.Screenshot()
+            val kind: Kind = when(dataExtractionNotification.type) {
+                SignalServiceProtos.DataExtractionNotification.Type.SCREENSHOT -> Kind.Screenshot()
                 SignalServiceProtos.DataExtractionNotification.Type.MEDIA_SAVED -> {
-                    val timestamp = if (dataExtractionNotification.hasTimestamp()) dataExtractionNotification.timestamp else 0
-                    kind = Kind.MediaSaved(timestamp)
+                    val timestamp = if (dataExtractionNotification.hasTimestamp()) dataExtractionNotification.timestamp else return null
+                    Kind.MediaSaved(timestamp)
                 }
             }
             return DataExtractionNotification(kind)

libsession/src/main/java/org/session/libsession/messaging/messages/control/ReadReceipt.kt

@@ -35,7 +35,7 @@ class ReadReceipt() : ControlMessage() {
     override fun toProto(): SignalServiceProtos.Content? {
         val timestamps = timestamps
         if (timestamps == null) {
-            Log.w(ExpirationTimerUpdate.TAG, "Couldn't construct read receipt proto from: $this")
+            Log.w(TAG, "Couldn't construct read receipt proto from: $this")
             return null
         }
         val receiptProto = SignalServiceProtos.ReceiptMessage.newBuilder()
@@ -46,7 +46,7 @@ class ReadReceipt() : ControlMessage() {
             contentProto.receiptMessage = receiptProto.build()
             return contentProto.build()
         } catch (e: Exception) {
-            Log.w(ExpirationTimerUpdate.TAG, "Couldn't construct read receipt proto from: $this")
+            Log.w(TAG, "Couldn't construct read receipt proto from: $this")
             return null
         }
     }