make sure we don't get an AttributeError when visiting accounting module the...

make sure we don't get an AttributeError when visiting accounting module the first time (without selection, without preference)


git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@5515 20353a03-c40f-0410-a6d1-a30d3c3de9de

bt5/erp5_accounting/SkinTemplateItem/portal_skins/erp5_accounting/AccountingTransactionModule_viewAccountingTransactionList/listbox.xml

@@ -447,7 +447,7 @@
                       <list>
                         <tuple>
                           <string>section_category</string>
-                          <string>here.portal_preferences.getPreferredAccountingTransactionSectionCategory()</string>
+                          <string>here.portal_preferences.getPreference(\'preferred_accounting_transaction_section_category\')</string>
                         </tuple>
                       </list>
                     </value>