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

include/wx/os2/region.h

@@ -53,7 +53,7 @@ public:
     }
 
     wxRegion();
-    ~wxRegion();
+    virtual ~wxRegion();
 
     //
     // Modify region
@@ -243,7 +243,7 @@ DECLARE_DYNAMIC_CLASS(wxRegionIterator);
 public:
     wxRegionIterator();
     wxRegionIterator(const wxRegion& rRegion);
-    ~wxRegionIterator();
+    virtual ~wxRegionIterator();
 
     void Reset(void) { m_lCurrent = 0; }
     void Reset(const wxRegion& rRegion);