[PATCH net] selftests/net: in rxtimestamp getopt_long needs terminating null entry

[Tanner Love]

From: tannerlove <tannerl...@google.com>

getopt_long requires the last element to be filled with zeros.
Otherwise, passing an unrecognized option can cause a segfault.

Fixes: 16e781224198 ("selftests/net: Add a test to validate behavior of rx 
timestamps")
Signed-off-by: Tanner Love <tannerl...@google.com>
Acked-by: Willem de Bruijn <will...@google.com>
---
 tools/testing/selftests/net/rxtimestamp.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/tools/testing/selftests/net/rxtimestamp.c 
b/tools/testing/selftests/net/rxtimestamp.c
index 6dee9e636a95..422e7761254d 100644
--- a/tools/testing/selftests/net/rxtimestamp.c
+++ b/tools/testing/selftests/net/rxtimestamp.c
@@ -115,6 +115,7 @@ static struct option long_options[] = {
        { "tcp", no_argument, 0, 't' },
        { "udp", no_argument, 0, 'u' },
        { "ip", no_argument, 0, 'i' },
+       { NULL, 0, NULL, 0 },
 };
 
 static int next_port = 19999;
-- 
2.27.0.278.ge193c7cf3a9-goog