【综合】整理代码

PDF Office/PDF Master/Class/Purchase/DMG/KMPurchaseEmbeddedWindowController.swift

@@ -938,7 +938,7 @@ class KMPurchaseEmbeddedWindowController: NSWindowController {
                             }
                             return
                         } else {
-                            couponClearButton.isHidden = true
+                            self.couponClearButton.isHidden = true
                             if dataInfo["discount"] is NSNull {
                                 if dataInfo["price"] is NSNull {