Follow up to r1288.
Follow up to r1288.

* outgoing.c
  (serf__conn_update_pollset):
    Use the new 'written' field as a flag instead of setting setup to NULL.


git-svn-id: 683495cb1553624b05a54e2ba9533425f69cf277@1289 61a7d7f5-40b7-0310-9c16-bb0ea8cb1845

coapp-packages/serf,coapp-packages/serf,coapp-packages/serf