fix：使用完枪械 删除枪械，解决后期卡顿问题

Assets/_Zombie/Scripts/Player.cs

@@ -366,6 +366,7 @@ public class Player : NetworkRoomPlayer,IDamagable
         if (Guns.Count <= 0)
         {
             Debug.Log("无武器");
+            PickUpGun(GunType.Pistol,-999);
             return;
         }
 
@@ -456,7 +457,7 @@ public class Player : NetworkRoomPlayer,IDamagable
         if (rightGun != null)
         {
             rightGun.gameObject.SetActive(false);
-            NetworkServer.UnSpawn(rightGun.gameObject);
+            NetworkServer.Destroy(rightGun.gameObject);
             rightGun = null;
         }