【内存】文档关闭时置空listView的代理和置空document的代理

PDF Office/PDF Master/Class/PDFWindowController/ViewController/KMMainViewController.swift

@@ -207,6 +207,10 @@ import Cocoa
     
     deinit {
         NotificationCenter.default.removeObserver(self)
+        
+        self.listView.delegate = nil
+        self.listView.document.delegate = nil
+        
         self.removeEventMonitor()
         self.removeKeyEventMonitor()
     }