[1.1, 1.2] fixed default value returned by sfNoCache::get() method
[1.1, 1.2] fixed default value returned by sfNoCache::get() method

git-svn-id: 7038a89b398528086dab5106cc8d05243a854dbc@10970 ee427ae8-e902-0410-961c-c3ed070cd9f9

theodo/symfony1.1-backports,theodo/symfony1.1-backports,theodo/symfony1.1-backports