Warning fixes found under hardest mode of OpenWatcom. Seems clean in Borland, MinGW and DMC.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@29684 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

samples/splitter/splitter.cpp

@@ -73,7 +73,7 @@ class MyFrame: public wxFrame
 {
 public:
     MyFrame();
-    virtual ~MyFrame();
+    virtual ~MyFrame(){};
 
     // Menu commands
     void SplitHorizontal(wxCommandEvent& event);
@@ -121,7 +121,7 @@ class MyCanvas: public wxScrolledWindow
 {
 public:
     MyCanvas(wxWindow* parent, bool mirror);
-    virtual ~MyCanvas();
+    virtual ~MyCanvas(){};
 
     virtual void OnDraw(wxDC& dc);
 
@@ -242,10 +242,6 @@ MyFrame::MyFrame()
 #endif // wxUSE_STATUSBAR
 }
 
-MyFrame::~MyFrame()
-{
-}
-
 // menu command handlers
 
 void MyFrame::Quit(wxCommandEvent& WXUNUSED(event) )
@@ -419,10 +415,6 @@ MyCanvas::MyCanvas(wxWindow* parent, bool mirror)
     m_mirror = mirror;
 }
 
-MyCanvas::~MyCanvas()
-{
-}
-
 void MyCanvas::OnDraw(wxDC& dcOrig)
 {
     wxMirrorDC dc(dcOrig, m_mirror);