prevent warning
prevent warning

git-svn-id: 8d405b1344033e1857dac73ed6b9835985cf17aa@4316 5b3c568a-86f9-4a59-a47a-7be284f604b4

c2corg/camptocamp.org,c2corg/camptocamp.org,c2corg/camptocamp.org,c2corg/camptocamp.org,c2corg/camptocamp.org