Add m_fsStyle next to m_windowStyle

Add HasFdFlag()
  Use it for all tests in all variants of
    wxFileDialogs. That way it will be easier
    to change again centrally, if required.


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@42399 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/gtk/filedlg.cpp

@@ -404,7 +404,7 @@ void wxFileDialog::SetFilename(const wxString& name)
 {
     if (!gtk_check_version(2,4,0))
     {
-        if (HasFlag(wxFD_SAVE))
+        if (HasFdFlag(wxFD_SAVE))
             gtk_file_chooser_set_current_name(GTK_FILE_CHOOSER(m_widget), wxGTK_CONV(name));
         else
             SetPath(wxFileName(GetDirectory(), name).GetFullPath());