Fixed response rpc timeout chekcs

Author: TwoTenPvP

MLAPI/NetworkingManagerComponents/Core/ResponseMessageManager.cs

@@ -1,4 +1,5 @@
 using System.Collections.Generic;
+using System.Linq;
 using UnityEngine;
 
 namespace MLAPI.Internal
@@ -17,16 +18,15 @@ internal static ulong GenerateMessageId()
 
         internal static void CheckTimeouts()
         {
-            while (responseAdded.Count > 0 && Time.time - responseAdded[0] > pendingResponses[responseAdded.Keys[0]].Timeout)
+            while (responseAdded.Count > 0 && Time.time - responseAdded[responseAdded.Keys[0]] > pendingResponses[responseAdded.Keys[0]].Timeout)
             {
                 ulong key = responseAdded.Keys[0];
 
                 RpcResponseBase response = pendingResponses[key];
                 response.IsDone = true;
                 response.IsSuccessful = false;
-                
-                responseAdded.Remove(key);
-                pendingResponses.Remove(key);
+               
+                Remove(key);
             }
         }