A few loops were declaring 'i', but this variable was not used.

To avoid confusions, use '_' instead: it is more explicit to mark that
this variable is not needed.

Reviewed-by: Geliang Tang <geliang@kernel.org>
Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
---
 tools/testing/selftests/net/mptcp/mptcp_join.sh | 9 +++------
 1 file changed, 3 insertions(+), 6 deletions(-)

diff --git a/tools/testing/selftests/net/mptcp/mptcp_join.sh b/tools/testing/selftests/net/mptcp/mptcp_join.sh
index a8b9782a85df..0f9253d607c3 100755
--- a/tools/testing/selftests/net/mptcp/mptcp_join.sh
+++ b/tools/testing/selftests/net/mptcp/mptcp_join.sh
@@ -603,8 +603,7 @@ wait_rm_addr()
 	local old_cnt="${2}"
 	local cnt
 
-	local i
-	for i in $(seq 10); do
+	for _ in $(seq 10); do
 		cnt=$(rm_addr_count ${ns})
 		[ "$cnt" = "${old_cnt}" ] || break
 		sleep 0.1
@@ -623,8 +622,7 @@ wait_rm_sf()
 	local old_cnt="${2}"
 	local cnt
 
-	local i
-	for i in $(seq 10); do
+	for _ in $(seq 10); do
 		cnt=$(rm_sf_count ${ns})
 		[ "$cnt" = "${old_cnt}" ] || break
 		sleep 0.1
@@ -648,8 +646,7 @@ wait_ll_ready()
 {
 	local ns="${1}"
 
-	local i
-	for i in $(seq 50); do
+	for _ in $(seq 50); do
 		ip -n "${ns}" -6 addr show scope link | grep "inet6 fe80" |
 			grep -qw "tentative" || break
 		sleep 0.1

-- 
2.51.0