tcp: whitespace fixes

Fix places where there is space before tab, long lines, and
awkward if(){, double spacing etc. Add blank line after declaration/initialization.

Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

net/ipv4/tcp_veno.c

@@ -175,7 +175,6 @@ static void tcp_veno_cong_avoid(struct sock *sk, u32 ack, u32 acked)
 				} else
 					tp->snd_cwnd_cnt++;
 			}
-
 		}
 		if (tp->snd_cwnd < 2)
 			tp->snd_cwnd = 2;