Squash to "selftests: mptcp: explicitly trigger the listener diag cod…

…e-path"

Fix stderr redirection to /dev/null.

Spot by Simon, with ShellCheck:

  SC2069 (warning): To redirect stdout+stderr, 2>&1 must be last (or use '{ cmd > file; } 2>&1' to clarify).

Suggested-by: Simon Horman <horms@kernel.org>
Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>

tools/testing/selftests/net/mptcp/diag.sh

@@ -302,7 +302,7 @@ chk_listener_nr 0 "no listener sockets"
 NR_SERVERS=100
 for I in $(seq 1 $NR_SERVERS); do
 	ip netns exec $ns ./mptcp_connect -p $((I + 20001)) \
-		-t ${timeout_poll} -l 0.0.0.0 2>&1 >/dev/null &
+		-t ${timeout_poll} -l 0.0.0.0 >/dev/null 2>&1 &
 done
 
 for I in $(seq 1 $NR_SERVERS); do
@@ -313,7 +313,7 @@ chk_listener_nr $NR_SERVERS "many listener sockets"
 
 # graceful termination
 for I in $(seq 1 $NR_SERVERS); do
-	echo a | ip netns exec $ns ./mptcp_connect -p $((I + 20001)) 127.0.0.1 2>&1 >/dev/null &
+	echo a | ip netns exec $ns ./mptcp_connect -p $((I + 20001)) 127.0.0.1 >/dev/null 2>&1 &
 done
 flush_pids