Added missing test in wxObject::Ref() for already

equal objects (same m_refData).
  Implemented new ref counting for wxBrush, wxPen
    and wxColour (in addition to wxRegion). Also
    inlined some more functions and implemented
    real comparisons.
  Corrected refresh code to update GTK's window-less
    widgets if overdrawn after a wxWindow::Refresh().


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@13999 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/common/object.cpp

@@ -230,6 +230,10 @@ void wxObject::Ref(const wxObject& clone)
     DEBUG_PRINTF(wxObject::Ref)
 #endif
 
+    // nothing to be done
+    if (m_refData == clone.m_refData)
+        return;
+
     // delete reference to old data
     UnRef();