[NET] IPV4: Fix whitespace errors.

Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>

net/ipv4/fib_frontend.c

@@ -817,7 +817,7 @@ static void nl_fib_input(struct sock *sk, int len)
 static void nl_fib_lookup_init(void)
 {
       netlink_kernel_create(NETLINK_FIB_LOOKUP, 0, nl_fib_input, NULL,
-      			    THIS_MODULE);
+			    THIS_MODULE);
 }
 
 static void fib_disable_ip(struct net_device *dev, int force)

net/ipv4/ip_forward.c

@@ -86,7 +86,7 @@ int ip_forward(struct sk_buff *skb)
 		goto sr_failed;
 
 	if (unlikely(skb->len > dst_mtu(&rt->u.dst) &&
-	             (ip_hdr(skb)->frag_off & htons(IP_DF))) && !skb->local_df) {
+		     (ip_hdr(skb)->frag_off & htons(IP_DF))) && !skb->local_df) {
 		IP_INC_STATS(IPSTATS_MIB_FRAGFAILS);
 		icmp_send(skb, ICMP_DEST_UNREACH, ICMP_FRAG_NEEDED,
 			  htonl(dst_mtu(&rt->u.dst)));

net/ipv4/tcp_output.c

@@ -1615,7 +1615,7 @@ u32 __tcp_select_window(struct sock *sk)
 		if (window <= free_space - mss || window > free_space)
 			window = (free_space/mss)*mss;
 		else if (mss == full_space &&
-		         free_space > window + full_space/2)
+			 free_space > window + full_space/2)
 			window = free_space;
 	}