【内存】阅读页在标签关闭时，释放CPDFListView内存

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

@@ -1932,7 +1932,7 @@ import Cocoa
         }
         self.removeAutoSaveInfo()
         KMAdsManager.defaultManager.dismissSheetModal(for: self.readContentView)
-//        self.myDocument = nil
+        self.myDocument = nil
         
     }