use wxNullFont instead of *wxNORMAL_FONT as default parameter for wxFontPickerCtrl/Widget, this fixes compilation with gcc 2.95 and possibly other old compilers

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@42999 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/generic/fontpickerg.cpp

@@ -64,7 +64,7 @@ bool wxGenericFontButton::Create( wxWindow *parent, wxWindowID id,
             wxCommandEventHandler(wxGenericFontButton::OnButtonClick),
             NULL, this);
 
-    m_selectedFont = initial;
+    m_selectedFont = initial.IsOk() ? initial : *wxNORMAL_FONT;
     UpdateFont();
     InitFontData();