Change qemu_set_fd_handler2(..., NULL, ...) to qemu_set_fd_handler

Done with following Coccinelle semantic patch, plus manual cosmetic changes in
net/*.c.

    @@
    expression E1, E2, E3, E4;
    @@
    -   qemu_set_fd_handler2(E1, NULL, E2, E3, E4);
    +   qemu_set_fd_handler(E1, E2, E3, E4);

Signed-off-by: Fam Zheng <famz@redhat.com>
Message-id: 1433400324-7358-8-git-send-email-famz@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
diff --git a/net/l2tpv3.c b/net/l2tpv3.c
index 99d80b6..356dae2 100644
--- a/net/l2tpv3.c
+++ b/net/l2tpv3.c
@@ -138,10 +138,10 @@
 
 static void l2tpv3_update_fd_handler(NetL2TPV3State *s)
 {
-    qemu_set_fd_handler2(s->fd, NULL,
-                         s->read_poll ? net_l2tpv3_send     : NULL,
-                         s->write_poll ? l2tpv3_writable : NULL,
-                         s);
+    qemu_set_fd_handler(s->fd,
+                        s->read_poll ? net_l2tpv3_send : NULL,
+                        s->write_poll ? l2tpv3_writable : NULL,
+                        s);
 }
 
 static void l2tpv3_read_poll(NetL2TPV3State *s, bool enable)