Do not build player arrays with empty string

Gameboard.ShogiUI.Sockets/Managers/ClientActionHandlers/ListGamesHandler.cs

@@ -34,10 +34,12 @@ namespace Websockets.Managers.ClientActionHandlers
 
       var games = getGamesResponse.Sessions
           .OrderBy(s => s.Player1 == userName || s.Player2 == userName)
-          .Select(s => new Game
+          .Select(s =>
           {
-            GameName = s.Name,
-            Players = new[] { s.Player1, s.Player2 }
+            var players = new[] { s.Player1, s.Player2 }
+              .Where(p => !string.IsNullOrWhiteSpace(p))
+              .ToArray();
+            return new Game { GameName = s.Name, Players = players };
           });
       var response = new ListGamesResponse(ClientAction.ListGames)
       {

Gameboard.ShogiUI.Sockets/Managers/ClientActionHandlers/LoadGameHandler.cs

@@ -42,11 +42,10 @@ namespace Websockets.Managers.ClientActionHandlers
       else
       {
         var session = getGameResponse.Session;
-        response.Game = new Game
-        {
-          GameName = session.Name,
-          Players = new[] { session.Player1, session.Player2 }
-        };
+        var players = new[] { session.Player1, session.Player2 }
+              .Where(p => !string.IsNullOrWhiteSpace(p))
+              .ToArray();
+        response.Game = new Game { GameName = session.Name, Players = players };
 
         response.Moves = userName.Equals(session.Player1)
             ? getMovesResponse.Moves.Select(_ => Mapper.Map(_))