[PATCH net-next] tcp: remove set but not used variable 'skb_size'

[Wei Yongjun]

Fixes gcc '-Wunused-but-set-variable' warning:

net/ipv4/tcp_output.c: In function 'tcp_collapse_retrans':
net/ipv4/tcp_output.c:2700:6: warning:
 variable 'skb_size' set but not used [-Wunused-but-set-variable]
  int skb_size, next_skb_size;
      ^

Signed-off-by: Wei Yongjun <weiyongj...@huawei.com>
---
 net/ipv4/tcp_output.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/net/ipv4/tcp_output.c b/net/ipv4/tcp_output.c
index 490df62..731e6d4 100644
--- a/net/ipv4/tcp_output.c
+++ b/net/ipv4/tcp_output.c
@@ -2697,9 +2697,8 @@ static bool tcp_collapse_retrans(struct sock *sk, struct 
sk_buff *skb)
 {
        struct tcp_sock *tp = tcp_sk(sk);
        struct sk_buff *next_skb = skb_rb_next(skb);
-       int skb_size, next_skb_size;
+       int next_skb_size;
 
-       skb_size = skb->len;
        next_skb_size = next_skb->len;
 
        BUG_ON(tcp_skb_pcount(skb) != 1 || tcp_skb_pcount(next_skb) != 1);