[nf-next:master 8/11] net/ipv4/netfilter/nft_fib_ipv4.c:80:6: warning: unused variable 'i'

[kbuild test robot <fengguang.wu@xxxxxxxxx>]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/pablo/nf-next.git master
head:   ca6f98035ddfbdb00aa698ea0357e0183a13af5c
commit: 84f5eedb983e3c4565e783f87c37fa0dbfa407c3 [8/11] netfilter: nf_tables: add fib expression
config: i386-randconfig-x078-201644 (attached as .config)
compiler: gcc-6 (Debian 6.2.0-3) 6.2.0 20160901
reproduce:
        git checkout 84f5eedb983e3c4565e783f87c37fa0dbfa407c3
        # save the attached .config to linux build tree
        make ARCH=i386 

All warnings (new ones prefixed by >>):

   net/ipv4/netfilter/nft_fib_ipv4.c: In function 'nft_fib4_eval':
>> net/ipv4/netfilter/nft_fib_ipv4.c:80:6: warning: unused variable 'i' [-Wunused-variable]
     int i;
         ^

vim +/i +80 net/ipv4/netfilter/nft_fib_ipv4.c

    64		return dev ? dev->ifindex : 0;
    65	}
    66	
    67	void nft_fib4_eval(const struct nft_expr *expr, struct nft_regs *regs,
    68			   const struct nft_pktinfo *pkt)
    69	{
    70		const struct nft_fib *priv = nft_expr_priv(expr);
    71		u32 *dest = &regs->data[priv->dreg];
    72		const struct iphdr *iph;
    73		struct fib_result res;
    74		struct flowi4 fl4 = {
    75			.flowi4_scope = RT_SCOPE_UNIVERSE,
    76			.flowi4_iif = LOOPBACK_IFINDEX,
    77		};
    78		const struct net_device *oif;
    79		struct net_device *found;
  > 80		int i;
    81	
    82		/*
    83		 * Do not set flowi4_oif, it restricts results (for example, asking
    84		 * for oif 3 will get RTN_UNICAST result even if the daddr exits
    85		 * on another interface.
    86		 *
    87		 * Search results for the desired outinterface instead.
    88		 */

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