move block into lock: if several threads fiddle with erp5.accessor_holder

at the same time, we could lose with some AttributeErrors


git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@41744 20353a03-c40f-0410-a6d1-a30d3c3de9de

product/ERP5Type/dynamic/portal_type_class.py

@@ -400,13 +400,13 @@ def synchronizeDynamicModules(context, force=False):
     for class_name, klass in inspect.getmembers(erp5.portal_type,
                                                 inspect.isclass):
       klass.restoreGhostState()
-  finally:
-    Base.aq_method_lock.release()
 
     # Clear accessor holders of ZODB Property Sheets
     for property_sheet_id in erp5.accessor_holder.__dict__.keys():
       if not property_sheet_id.startswith('__'):
         delattr(erp5.accessor_holder, property_sheet_id)
+  finally:
+    Base.aq_method_lock.release()
 
   # Necessary because accessors are wrapped in WorkflowMethod by
   # _aq_dynamic (performed in createAccessorHolder)