BUG/MEDIUM: lua: the lua fucntion Channel:close() causes a segfault

The function dont remove remaineing analysers and dont update response
channel timeout.

The fix is a copy of the behavior of the functions http_apply_redirect_rule()
and stream_int_retnclose().
diff --git a/src/hlua.c b/src/hlua.c
index abfb2b5..84aee63 100644
--- a/src/hlua.c
+++ b/src/hlua.c
@@ -3621,13 +3621,17 @@
 	ic = &htxn->s->req;
 	oc = &htxn->s->res;
 
+	channel_auto_read(ic);
 	channel_abort(ic);
 	channel_auto_close(ic);
 	channel_erase(ic);
+
+	oc->wex = tick_add_ifset(now_ms, oc->wto);
 	channel_auto_read(oc);
 	channel_auto_close(oc);
 	channel_shutr_now(oc);
 
+	htxn->s->txn->req.chn->analysers = 0;
 	return 0;
 }