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@29813 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/choice.h

@@ -38,7 +38,7 @@ class WXDLLEXPORT wxChoiceBase : public wxControlWithItems
 {
 public:
     wxChoiceBase() { }
-    virtual ~wxChoiceBase();
+    virtual ~wxChoiceBase(){};
 
     // all generic methods are in wxControlWithItems
 

include/wx/cmdproc.h

@@ -30,7 +30,7 @@ class WXDLLEXPORT wxCommand : public wxObject
 {
 public:
     wxCommand(bool canUndoIt = false, const wxString& name = wxEmptyString);
-    ~wxCommand();
+    ~wxCommand(){};
 
     // Override this to perform a command
     virtual bool Do() = 0;

include/wx/datstrm.h

@@ -30,7 +30,7 @@ public:
 #else
     wxDataInputStream(wxInputStream& s);
 #endif
-    ~wxDataInputStream();
+    ~wxDataInputStream(){};
 
     bool IsOk() { return m_input->IsOk(); }
 
@@ -78,7 +78,7 @@ public:
 #else
     wxDataOutputStream(wxOutputStream& s);
 #endif
-    ~wxDataOutputStream();
+    ~wxDataOutputStream(){};
 
     bool IsOk() { return m_output->IsOk(); }
 

include/wx/log.h

@@ -123,7 +123,7 @@ class WXDLLIMPEXP_BASE wxLog
 {
 public:
     // ctor
-    wxLog();
+    wxLog(){};
 
     // Internal buffer.
 

include/wx/strconv.h

@@ -64,7 +64,7 @@ public:
 #endif // Unicode/ANSI
 
     // virtual dtor for any base class
-    virtual ~wxMBConv();
+    virtual ~wxMBConv(){};
 };
 
 // ----------------------------------------------------------------------------