do not sleep to much time while waiting for activities

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@11280 20353a03-c40f-0410-a6d1-a30d3c3de9de

bt5/erp5_ui_test/SkinTemplateItem/portal_skins/erp5_ui_test/ListBoxZuite_waitForActivities.xml

@@ -75,7 +75,7 @@ count = 1000\n
 while len(context.portal_activities.getMessageList()) > 0:\n
   context.portal_activities.process_timer(0, 0)\n
   count -= 1\n
-  sleep()\n
+  sleep(t=1)\n
   if count < 0:\n
     raise RuntimeError, \'tic is endless\'\n
 \n

bt5/erp5_ui_test/bt/revision

-123
+128
\ No newline at end of file