git: e967183cb030 - main - Fix unused variable warning in tcp_stacks's rack.c

The branch main has been updated by dim:

URL: https://cgit.FreeBSD.org/src/commit/?id=e967183cb030dfc349c264520e5710bac70bcdd4

commit e967183cb030dfc349c264520e5710bac70bcdd4
Author:     Dimitry Andric <dim@FreeBSD.org>
AuthorDate: 2022-08-14 19:13:40 +0000
Commit:     Dimitry Andric <dim@FreeBSD.org>
CommitDate: 2022-08-14 19:27:34 +0000

    Fix unused variable warning in tcp_stacks's rack.c
    
    With clang 15, the following -Werror warning is produced:
    
        sys/netinet/tcp_stacks/rack.c:16148:6: error: variable 'cnt_thru' set but not used [-Werror,-Wunused-but-set-variable]
                int cnt_thru = 1;
                    ^
    
    The 'cnt_thru' variable is only used when TCP_ACCOUNTING is defined.
    Ensure it is only declared and set in that case.
    
    MFC after:      3 days
---
 sys/netinet/tcp_stacks/rack.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/sys/netinet/tcp_stacks/rack.c b/sys/netinet/tcp_stacks/rack.c
index c3008b38dd4f..0cb7b5cb4680 100644
--- a/sys/netinet/tcp_stacks/rack.c
+++ b/sys/netinet/tcp_stacks/rack.c
@@ -16145,7 +16145,9 @@ rack_fast_output(struct tcpcb *tp, struct tcp_rack *rack, uint64_t ts_val,
 	struct tcpopt to;
 	u_char opt[TCP_MAXOLEN];
 	uint32_t hdrlen, optlen;
+#ifdef TCP_ACCOUNTING
 	int cnt_thru = 1;
+#endif
 	int32_t slot, segsiz, len, max_val, tso = 0, sb_offset, error, ulen = 0;
 	uint16_t flags;
 	uint32_t s_soff;
@@ -16503,7 +16505,9 @@ again:
 		max_val -= len;
 		len = segsiz;
 		th = rack->r_ctl.fsb.th;
+#ifdef TCP_ACCOUNTING
 		cnt_thru++;
+#endif
 		goto again;
 	}
 	tp->t_flags &= ~(TF_ACKNOW | TF_DELACK);