From e8d5499d72950b9e22d1444c1a4443574d938386 Mon Sep 17 00:00:00 2001
From: Dirk Ziegelmeier <dirk@ziegelmeier.net>
Date: Wed, 1 Feb 2017 15:28:10 +0100
Subject: [PATCH] Code cleanup: add some parentheses in tcp.c and tcp_out.c

---
 src/core/tcp.c     | 8 ++++----
 src/core/tcp_out.c | 6 +++---
 2 files changed, 7 insertions(+), 7 deletions(-)

diff --git a/src/core/tcp.c b/src/core/tcp.c
index 75be86bb..afdf8bff 100644
--- a/src/core/tcp.c
+++ b/src/core/tcp.c
@@ -1301,7 +1301,7 @@ tcp_process_refused_data(struct tcp_pcb *pcb)
     TCP_EVENT_RECV(pcb, refused_data, ERR_OK, err);
     if (err == ERR_OK) {
       /* did refused_data include a FIN? */
-      if (refused_flags & PBUF_FLAG_TCP_FIN
+      if ((refused_flags & PBUF_FLAG_TCP_FIN)
 #if TCP_QUEUE_OOSEQ && LWIP_WND_SCALE
           && (rest == NULL)
 #endif /* TCP_QUEUE_OOSEQ && LWIP_WND_SCALE */
@@ -1826,9 +1826,9 @@ tcp_pcb_remove(struct tcp_pcb **pcblist, struct tcp_pcb *pcb)
   tcp_pcb_purge(pcb);
 
   /* if there is an outstanding delayed ACKs, send it */
-  if (pcb->state != TIME_WAIT &&
-     pcb->state != LISTEN &&
-     pcb->flags & TF_ACK_DELAY) {
+  if ((pcb->state != TIME_WAIT) &&
+      (pcb->state != LISTEN) &&
+      (pcb->flags & TF_ACK_DELAY)) {
     pcb->flags |= TF_ACK_NOW;
     tcp_output(pcb);
   }
diff --git a/src/core/tcp_out.c b/src/core/tcp_out.c
index 4928cddd..108028b2 100644
--- a/src/core/tcp_out.c
+++ b/src/core/tcp_out.c
@@ -1014,9 +1014,9 @@ tcp_output(struct tcp_pcb *pcb)
    *
    * If data is to be sent, we will just piggyback the ACK (see below).
    */
-  if (pcb->flags & TF_ACK_NOW &&
-     (seg == NULL ||
-      lwip_ntohl(seg->tcphdr->seqno) - pcb->lastack + seg->len > wnd)) {
+  if ((pcb->flags & TF_ACK_NOW) &&
+      (seg == NULL ||
+       lwip_ntohl(seg->tcphdr->seqno) - pcb->lastack + seg->len > wnd)) {
      return tcp_send_empty_ack(pcb);
   }