Merge pull request #65 from jaglitegrann/bug/NetworkedManager-singelton-gets-null-when-other-instanced-is-removed

Fix a bug that made NetworkedManager be set to null when destroying a…

Author: TwoTenPvP

MLAPI/MonoBehaviours/Core/NetworkingManager.cs

@@ -148,6 +148,10 @@ public bool IsClientConnected
         /// The callback to invoke once the server is ready
         /// </summary>
         public Action OnServerStarted = null;
+        /// <summary>
+        /// Wheter or not this NetworkedManager is an multiple instance of the singleton about to be removed.
+        /// </summary>
+        private bool isMultipleInstance = false;
         public delegate void ConnectionApprovedDelegate(uint clientId, int prefabId, bool approved, Vector3 position, Quaternion rotation);
         /// <summary>
         /// The callback to invoke during connection approval
@@ -646,7 +650,8 @@ private void OnEnable()
             if (singleton != null)
             {
                 if (LogHelper.CurrentLogLevel <= LogLevel.Normal) LogHelper.LogWarning("Multiple NetworkingManagers");
-                Destroy(this);
+                this.isMultipleInstance = true;
+                Destroy(this.gameObject);
                 return;
             }
             _singleton = this;
@@ -658,8 +663,10 @@ private void OnEnable()
 
         private void OnDestroy()
         {
-            _singleton = null;
-            Shutdown();
+            if (!isMultipleInstance) {
+                _singleton = null;
+                Shutdown();
+            }
         }
 
         private void Shutdown()