tcp: remove sent rcv wnd 0 flag

Change-Id: If6c672d1caa8884eb5d819311606a79a3de81200
Signed-off-by: Florin Coras <fcoras@cisco.com>
diff --git a/src/vnet/tcp/tcp_input.c b/src/vnet/tcp/tcp_input.c
index c27631f..cc630f8 100644
--- a/src/vnet/tcp/tcp_input.c
+++ b/src/vnet/tcp/tcp_input.c
@@ -1876,8 +1876,8 @@
 {
   /* Send ack if ... */
   if (TCP_ALWAYS_ACK
-      /* just sent a rcv wnd 0 */
-      || (tc->flags & TCP_CONN_SENT_RCV_WND0) != 0
+      /* just sent a rcv wnd 0
+         || (tc->flags & TCP_CONN_SENT_RCV_WND0) != 0 */
       /* constrained to send ack */
       || (tc->flags & TCP_CONN_SNDACK) != 0
       /* we're almost out of tx wnd */