Make fib6_node 'subtree' depend on IPV6_SUBTREES.
Signed-off-by: Kim Nordlund <kim.nordlund@nokia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
        struct fib6_node        *parent;
        struct fib6_node        *left;
        struct fib6_node        *right;
-
+#ifdef CONFIG_IPV6_SUBTREES
        struct fib6_node        *subtree;
-
+#endif
        struct rt6_info         *leaf;
 
        __u16                   fn_bit;         /* bit key */
 
                                goto out; \
                        pn = fn->parent; \
                        if (FIB6_SUBTREE(pn) && FIB6_SUBTREE(pn) != fn) \
-                               fn = fib6_lookup(pn->subtree, NULL, saddr); \
+                               fn = fib6_lookup(FIB6_SUBTREE(pn), NULL, saddr); \
                        else \
                                fn = pn; \
                        if (fn->fn_flags & RTN_RTINFO) \