From 8041a5097310f580eeaa7bb2672ac18e28a492c3 Mon Sep 17 00:00:00 2001
From: "bryner%brianryner.com" <bryner%brianryner.com>
Date: Sat, 15 Jan 2005 01:09:16 +0000
Subject: [PATCH] Make sure stub-derived elements get destroyed properly by
 adding a virtual destructor. r=dbaron.

---
 extensions/xforms/nsXFormsStubElement.h | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/extensions/xforms/nsXFormsStubElement.h b/extensions/xforms/nsXFormsStubElement.h
index e04c6d366f75..a9b6d2ac3362 100644
--- a/extensions/xforms/nsXFormsStubElement.h
+++ b/extensions/xforms/nsXFormsStubElement.h
@@ -51,6 +51,13 @@
  */
 class nsXFormsStubElement : public nsIXTFGenericElement
 {
+protected:
+  // We need a virtual destructor so that when a subclass does
+  // NS_IMPL_ISUPPORTS_INHERITED, our Release() implementation calls the
+  // derived class destructor.
+  virtual ~nsXFormsStubElement() {}
+
+public:
   NS_DECL_ISUPPORTS
   NS_DECL_NSIXTFELEMENT
   NS_DECL_NSIXTFGENERICELEMENT
@@ -66,6 +73,13 @@ class nsXFormsStubElement : public nsIXTFGenericElement
  */
 class nsXFormsXMLVisualStub : public nsIXTFXMLVisual
 {
+protected:
+  // We need a virtual destructor so that when a subclass does
+  // NS_IMPL_ISUPPORTS_INHERITED, our Release() implementation calls the
+  // derived class destructor.
+  virtual ~nsXFormsXMLVisualStub() {}
+
+public:
   NS_DECL_ISUPPORTS
   NS_DECL_NSIXTFELEMENT
   NS_DECL_NSIXTFVISUAL