Room Creation: handle new created room as an empty room.

Vector/Model/RoomList/RecentCellData.m

@@ -27,6 +27,10 @@
 {
     [super update];
     roomDisplayname = self.roomDataSource.room.vectorDisplayname;
+    if (!roomDisplayname.length)
+    {
+        roomDisplayname = NSLocalizedStringFromTable(@"room_displayname_no_title", @"Vector", nil);
+    }
 }
 
 @end