单例对象销毁时的检查，修正由此错误的销毁单例对象的bug

UnityProject/Assets/GameScripts/HotFix/GameBase/SingletonBehaviour.cs

@@ -36,7 +36,10 @@ namespace GameBase
 
         protected virtual void OnDestroy()
         {
-            Release();
+            if (this == _instance)
+            {
+                Release();
+            }
         }
 
         /// <summary>
@@ -96,7 +99,7 @@ namespace GameBase
                         }
                     }
 
-                    if(_instance == null)
+                    if (_instance == null)
                     {
                         Log.Error($"Can't create SingletonBehaviour<{typeof(T)}>");
                     }