fix: remove OnClientConnectedCallback registration from StatsDisplay (#882)

* style

Comments for OnDestroy method

* fix

Yamato 1 commit problems.

Author: NoelStephensUnity

testproject/Assets/Tests/Manual/Scripts/StatsDisplay.cs

@@ -18,7 +18,6 @@ public class StatsDisplay : NetworkBehaviour
         private Text m_ClientServerToggleText;
         private List<ulong> m_ClientsToUpdate = new List<ulong>();
 
-
         private bool m_IsServer;
 
         private void Start()
@@ -72,6 +71,14 @@ private void OnClientConnectedCallback(ulong clientId)
             }
         }
 
+        /// <summary>
+        /// Remove our OnClientConnectedCallback registration when we are destroyed
+        /// </summary>
+        private void OnDestroy()
+        {
+            NetworkManager.OnClientConnectedCallback -= OnClientConnectedCallback;
+        }
+
         /// <summary>
         /// Used by UI Button click event
         /// </summary>