[PATCH] samples/bpf: Fix a resource leak

[Zhu Jun <zhujun2@xxxxxxxxxxxxxxxxxxxx>]

The opened file should be closed in show_sockopts(), otherwise resource
leak will occur that this problem was discovered by reading code

Signed-off-by: Zhu Jun <zhujun2@xxxxxxxxxxxxxxxxxxxx>
---
 samples/bpf/test_cgrp2_sock.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/samples/bpf/test_cgrp2_sock.c b/samples/bpf/test_cgrp2_sock.c
index a0811df888f4..8ca2a445ffa1 100644
--- a/samples/bpf/test_cgrp2_sock.c
+++ b/samples/bpf/test_cgrp2_sock.c
@@ -178,8 +178,10 @@ static int show_sockopts(int family)
 		return 1;
 	}
 
-	if (get_bind_to_device(sd, name, sizeof(name)) < 0)
+	if (get_bind_to_device(sd, name, sizeof(name)) < 0) {
+		close(sd);
 		return 1;
+	}
 
 	mark = get_somark(sd);
 	prio = get_priority(sd);
-- 
2.17.1