Added speed-up for font-loading (a bit simplistic),

Moving between items in a radiobox works again,
  Tried to remove remaining gap in a wxStaticBox that
    has no text-label.


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@4642 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/gtk/statbox.cpp

@@ -50,7 +50,10 @@ bool wxStaticBox::Create( wxWindow *parent, wxWindowID id, const wxString &label
 
     m_isStaticBox = TRUE;
     
-    m_widget = gtk_frame_new(m_label.mbc_str());
+    if (label.IsEmpty())
+        m_widget = gtk_frame_new( (char*) NULL );
+    else
+        m_widget = gtk_frame_new( m_label.mbc_str() );
 
     m_parent->DoAddChild( this );