[TCP]: NAGLE_PUSH seems to be a wrong way around

The comment in tcp_nagle_test suggests that. This bug is very
very old, even 2.4.0 seems to have it.

Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@helsinki.fi>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/ipv4/tcp_output.c b/net/ipv4/tcp_output.c
index e5130a7..f4c1eef 100644
--- a/net/ipv4/tcp_output.c
+++ b/net/ipv4/tcp_output.c
@@ -1162,8 +1162,7 @@
 	return (skb &&
 		tcp_snd_test(sk, skb, tcp_current_mss(sk, 1),
 			     (tcp_skb_is_last(sk, skb) ?
-			      TCP_NAGLE_PUSH :
-			      tp->nonagle)));
+			      tp->nonagle : TCP_NAGLE_PUSH)));
 }
 
 /* Trim TSO SKB to LEN bytes, put the remaining data into a new packet