clean up

src/Helpers/PlayerControlHelper.cs

@@ -40,7 +40,9 @@ internal static class PlayerControlHelper
             var snapshot = AmongUsClient.Instance.allClients.ToArray();
             foreach (var client in snapshot)
             {
-                if (client?.Character == null) continue;
+                if (client == null) continue;
+                if (client.Character == null) continue;
+
                 if (client.Character.PlayerId == player.PlayerId)
                     return client;
             }

src/Patches/Gameplay/Player/PlayerJoinAndLeftPatch.cs

@@ -123,6 +123,9 @@ internal static class PlayerJoinAndLeftPatch
 
     internal static void BetterShowNotification(NetworkedPlayerInfo playerData, DisconnectReasons reason = DisconnectReasons.Unknown, string forceReasonText = "")
     {
+        if (playerData == null)
+            return;
+
         // Prevent showing duplicate notifications
         if (playerData.ExtendedData().AntiCheatInfo.BannedByAntiCheat || playerData.ExtendedData().HasShowDcMsg)
             return;