mark all dtors which are virtual because base class dtor is virtual explicitly virtual themselves

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@41020 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

contrib/include/wx/applet/loadpage.h

@@ -66,7 +66,7 @@ public:
             wxLoadPageEvent(const wxString &hRef = "",wxHtmlAppletWindow *htmlWindow = NULL);
 
             // Destructor
-            ~wxLoadPageEvent() {}
+            virtual ~wxLoadPageEvent() {}
 
             // Clone Virtual
             virtual wxEvent *Clone() const { return new wxLoadPageEvent(m_hRef, m_htmlWindow); }
@@ -96,7 +96,7 @@ public:
             wxPageLoadedEvent();
 
             // Destructor
-            ~wxPageLoadedEvent() {}
+            virtual ~wxPageLoadedEvent() {}
 
             // Clone Virtual
             virtual wxEvent *Clone() const {

contrib/include/wx/applet/prepecho.h

@@ -45,7 +45,7 @@ private:
 
 public:
     wxEchoPrep() : wxHtmlProcessor() {}
-    ~wxEchoPrep() {}
+    virtual ~wxEchoPrep() {}
 	
 	// Process input text and return processed result
     wxString Process(const wxString& text) const;

contrib/include/wx/applet/prepifelse.h

@@ -45,7 +45,7 @@ private:
 
 public:
     wxIfElsePrep() : wxHtmlProcessor() {}
-    ~wxIfElsePrep() {}
+    virtual ~wxIfElsePrep() {}
 	
 	// Process input text and return processed result
     wxString Process(const wxString& text) const;

contrib/include/wx/applet/prepinclude.h

@@ -49,7 +49,7 @@ private:
     wxFileSystem *m_FS;
 public:
     wxIncludePrep() : wxHtmlProcessor() {}
-    ~wxIncludePrep() {}
+    virtual ~wxIncludePrep() {}
 	
 	// Process input text and return processed result
     wxString Process(const wxString& text) const;

contrib/include/wx/applet/window.h

@@ -140,7 +140,7 @@ public:
                 const wxString& name = "htmlAppletWindow");
 
             // Destructor
-            ~wxHtmlAppletWindow();
+            virtual ~wxHtmlAppletWindow();
 
             // Create an instance of an applet based on it's class name
             wxApplet *CreateApplet(