[PATCH net] udp: include addrconf.h

From: Eric Dumazet <edumazet@google.com>

Include ipv4_rcv_saddr_equal() definition to avoid this sparse error :

net/ipv4/udp.c:362:5: warning: symbol 'ipv4_rcv_saddr_equal' was not
declared. Should it be static?

Signed-off-by: Eric Dumazet <edumazet@google.com>
---
 net/ipv4/udp.c |    1 +
 1 file changed, 1 insertion(+)

diff --git a/net/ipv4/udp.c b/net/ipv4/udp.c
index e61f7cd65d08..8f5f7f6026f7 100644
--- a/net/ipv4/udp.c
+++ b/net/ipv4/udp.c

@@ -114,6 +114,7 @@
 #include <net/busy_poll.h>
 #include "udp_impl.h"
 #include <net/sock_reuseport.h>
+#include <net/addrconf.h>
 
 struct udp_table udp_table __read_mostly;
 EXPORT_SYMBOL(udp_table);