"office:*" attributes may not exist.

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@38446 20353a03-c40f-0410-a6d1-a30d3c3de9de

product/ERP5OOo/FormPrintout.py

@@ -807,7 +807,7 @@ class ODFStrategy(Implicit):
     # such as '0.0', '$0'
     attrib = column.attrib
     for key in attrib.keys():
-      if key.startswith("{%s}" % column.nsmap['office']):
+      if 'office' in column.nsmap and key.startswith("{%s}" % column.nsmap['office']):
         del attrib[key]
     column.text = None
     [column.remove(child) for child in column]