net: Remove trailing whitespace in tcp.h icmp.c syncookies.c

Remove trailing whitespace in tcp.h icmp.c syncookies.c
Signed-off-by: NKenjiro Nakayama <nakayamakenjiro@gmail.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

net/ipv6/icmp.c

@@ -1009,4 +1009,3 @@ struct ctl_table * __net_init ipv6_icmp_sysctl_init(struct net *net)
 	return table;
 }
 #endif
-

net/ipv6/syncookies.c

@@ -269,4 +269,3 @@ struct sock *cookie_v6_check(struct sock *sk, struct sk_buff *skb)
 	reqsk_free(req);
 	return NULL;
 }
-