fix a mistake : "or None" was missing, this was raising site error in case of...

fix a mistake : "or None" was missing, this was raising site error in case of no variation_colour_2 defined

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@32056 20353a03-c40f-0410-a6d1-a30d3c3de9de

bt5/erp5_apparel/SkinTemplateItem/portal_skins/erp5_apparel/ApparelModel_PrintoutFormView/variation_colour_2.xml

@@ -311,7 +311,7 @@
             <key> <string>_text</string> </key>
             <value> <string encoding="cdata"><![CDATA[
 
-python: len(context.contentValues(portal_type=\'Apparel Model Colour Variation\')) >= 2 and context.contentValues(portal_type=\'Apparel Model Colour Variation\')[1].absolute_url()
+python: len(context.contentValues(portal_type=\'Apparel Model Colour Variation\')) >= 2 and context.contentValues(portal_type=\'Apparel Model Colour Variation\')[1].absolute_url() or None
 
 ]]></string> </value>
         </item>

bt5/erp5_apparel/bt/revision

-244
\ No newline at end of file
+246
\ No newline at end of file