Fix crash on unknown LAN games (#560)

* Fix crash on unknown LAN games

* Fix incorrect culture in game identifier comparison

Author: SadPencil

DXMainClient/DXGUI/Multiplayer/GameListBox.cs

@@ -128,7 +128,7 @@ private IEnumerable<GenericHostedGame> GetSortedGames()
             var sortedGames =
                 HostedGames
                     .OrderBy(hg => hg.Locked)
-                    .ThenBy(hg => string.Equals(hg.Game.InternalName, localGameIdentifier, StringComparison.CurrentCultureIgnoreCase))
+                    .ThenBy(hg => string.Equals(hg.Game.InternalName, localGameIdentifier, StringComparison.InvariantCultureIgnoreCase))
                     .ThenBy(hg => hg.GameVersion != ProgramConstants.GAME_VERSION)
                     .ThenBy(hg => hg.Passworded);
 

DXMainClient/Domain/Multiplayer/LAN/HostedLANGame.cs

@@ -36,6 +36,8 @@ public bool SetDataFromStringArray(GameCollection gc, string[] parameters)
             GameVersion = parameters[1];
             Incompatible = GameVersion != ProgramConstants.GAME_VERSION;
             Game = gc.GameList.Find(g => g.InternalName.ToUpperInvariant() == parameters[2]);
+            if (Game == null)
+                return false;
             Map = parameters[3];
             GameMode = parameters[4];
             LoadedGameID = parameters[5];