Merged modifications from the 2.6 branch

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@36607 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

wxPython/src/_dataobj.i

@@ -248,8 +248,7 @@ in the given direction.", "");
             for (size_t i=0; i<count; i++) {
                 wxDataFormat* format = new wxDataFormat(formats[i]);
                 PyObject* obj = wxPyConstructObject((void*)format, wxT("wxDataFormat"), true);
-                PyList_Append(list, obj);
-                Py_DECREF(obj);
+                PyList_SET_ITEM(list, i, obj); // PyList_SET_ITEM steals a reference
             }            
             wxPyEndBlockThreads(blocked);
             delete [] formats;