Do not call _getMessage unnecessarilly.

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@39307 20353a03-c40f-0410-a6d1-a30d3c3de9de

product/ERP5/Document/EmailDocument.py

@@ -380,7 +380,6 @@ class EmailDocument(TextDocument):
         return self._baseGetTitle()
       else:
         return self._baseGetTitle(default)
-    message = self._getMessage()
     subject = self.getContentInformation().get('Subject', '')
     # Remove all newlines
     if '\r' in subject: