[PATCH] samples cn_test: fix cn leakage

[libolingjl]

From: liboling <libolin...@163.com>

Error return when add the second cn_test_id,
we need del the first cn_test_id.

Signed-off-by: liboling <libolin...@163.com>
---
 samples/connector/cn_test.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/samples/connector/cn_test.c b/samples/connector/cn_test.c
index 0958a171d0..275e3f9082 100644
--- a/samples/connector/cn_test.c
+++ b/samples/connector/cn_test.c
@@ -151,6 +151,7 @@ static int cn_test_init(void)
        cn_test_id.val++;
        err = cn_add_callback(&cn_test_id, cn_test_name, cn_test_callback);
        if (err) {
+               cn_test_id.val--;
                cn_del_callback(&cn_test_id);
                goto err_out;
        }
-- 
2.17.1