net: clean up net/ipv4/ip_fragment.c tcp_timer.c ip_input.c

Signed-off-by: Jianjun Kong <jianjun@zeuux.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --cc net/ipv4/ip_fragment.c
Simple merge

diff --cc net/ipv4/ip_input.c
Simple merge

diff --cc net/ipv4/tcp_timer.c
Simple merge