fib: Expressive type for walk return code. Honour code.

Type: improvement

Signed-off-by: Neale Ranns <neale.ranns@cisco.com>
Change-Id: I487e698555545fce85d02d55deaaf7bb0007e388
diff --git a/src/vnet/fib/fib_node.c b/src/vnet/fib/fib_node.c
index 3e99007..1d3abd5 100644
--- a/src/vnet/fib/fib_node.c
+++ b/src/vnet/fib/fib_node.c
@@ -161,7 +161,7 @@
     return (fn_vfts[ptr->fnp_type].fnv_back_walk(node, ctx));
 }
 
-static int
+static walk_rc_t
 fib_node_ptr_format_one_child (fib_node_ptr_t *ptr,
 			       void *arg)
 {
@@ -169,7 +169,7 @@
 
     *s = fib_node_format(ptr, *s);
 
-    return (1);
+    return (WALK_CONTINUE);
 }
 
 u8*