Warning fixes for OpenWatcom.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@29961 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/image.h

@@ -136,7 +136,7 @@ public:
 class WXDLLEXPORT wxImage: public wxObject
 {
 public:
-    wxImage();
+    wxImage(){}
     wxImage( int width, int height, bool clear = true );
     wxImage( int width, int height, unsigned char* data, bool static_data = false );
     wxImage( const wxString& name, long type = wxBITMAP_TYPE_ANY, int index = -1 );