tevent: make sure we cleanup the array passed to poll() after deleting an event
If we don't cleanup the array passed to poll after an
event was deleted, we may pass a bad file descriptor to poll().
This was found by the following test failure in Samba's
autobuild, while removing the epoll support from
the "standard" backend.
[48/1555 in 4m37s] samba3.smbtorture_s3.plain(s3dc).LOCK4
UNEXPECTED(failure): samba3.smbtorture_s3.plain(s3dc).LOCK4.smbtorture(s3dc)
REASON: _StringException: _StringException: using seed
1361530718
host=127.0.0.2 share=tmp user=metze myname=sn-devel-104
Running LOCK4
starting locktest4
Failed to create file: NT_STATUS_INVALID_HANDLE
finished locktest4
TEST LOCK4 FAILED!
LOCK4 took 190.492 secs
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>