FIX: Fixed ip6_fib_dump api function response.

Change-Id: I26c5d61bc2f6188bcd4ecac4b5e9385821b0398b
Signed-off-by: Dmitry Vakhrushev <dmitry@netgate.com>
diff --git a/src/vnet/dpo/ip_null_dpo.h b/src/vnet/dpo/ip_null_dpo.h
index 002a2a7..6c7ced5 100644
--- a/src/vnet/dpo/ip_null_dpo.h
+++ b/src/vnet/dpo/ip_null_dpo.h
@@ -53,4 +53,6 @@
 
 extern void ip_null_dpo_module_init(void);
 
+extern ip_null_dpo_action_t ip_null_dpo_get_action(index_t indi);
+
 #endif