Correct initial state

vector/src/main/java/im/vector/riotredesign/features/roomdirectory/roompreview/RoomPreviewNoPreviewFragment.kt

@@ -53,8 +53,6 @@ class RoomPreviewNoPreviewFragment : VectorBaseFragment() {
         super.onActivityCreated(savedInstanceState)
         bindScope(getOrCreateScope(RoomDirectoryModule.ROOM_DIRECTORY_SCOPE))
         setupToolbar(roomPreviewNoPreviewToolbar)
-
-        roomPreviewViewModel.init(roomPreviewData.roomId)
     }
 
     override fun getLayoutResId() = R.layout.fragment_room_preview_no_preview

vector/src/main/java/im/vector/riotredesign/features/roomdirectory/roompreview/RoomPreviewViewModel.kt

@@ -70,15 +70,6 @@ class RoomPreviewViewModel(initialState: RoomPreviewViewState,
                 .disposeOnClear()
     }
 
-    // TODO I should not have to do that
-    fun init(roomId: String) = withState {
-        setState {
-            copy(
-                    roomId = roomId
-            )
-        }
-    }
-
     fun joinRoom() = withState { state ->
         if (state.roomJoinState == JoinState.JOINING) {
             // Request already sent, should not happen

vector/src/main/java/im/vector/riotredesign/features/roomdirectory/roompreview/RoomPreviewViewState.kt

@@ -26,4 +26,7 @@ data class RoomPreviewViewState(
         val roomJoinState: JoinState = JoinState.NOT_JOINED,
         // Last error of join room request
         val lastError: Throwable? = null
-) : MvRxState
+) : MvRxState {
+
+    constructor(args: RoomPreviewData) : this(roomId = args.roomId)
+}