onStoreTimeout is called by poll thread, which causes a new local_var to be
implicitly created with a new queue (specific to poll thread, which isn't
supposed to have one).
To know the queue that should receive AnswerHasLock, reuse the one
registered to dispatcher to receive AnswerStoreObject.

git-svn-id: https://svn.erp5.org/repos/neo/trunk@2144 71dcc9de-d417-0410-9af5-da40c76e7ee4