tevent: Only call handlers that ask for events
The s3 libsmbclient puts two different handlers on a single fd for readability
and writability. With select this works fine, however without this patch we
unconditionally call the write handler even if the socket is only readable. We
should have called the read handler instead.
Autobuild-User: Jeremy Allison <jra@samba.org>
Autobuild-Date: Wed Oct 6 23:40:24 UTC 2010 on sn-devel-104
(cherry picked from commit
1c9b85667070ee3292862d007f03b33b10713edd)