[PATCH] bpf: fix warning comparing pointer to 0

[Jiapeng Chong]

Fix the following coccicheck warning:

./tools/testing/selftests/bpf/progs/fentry_test.c:67:12-13: WARNING
comparing pointer to 0.

Reported-by: Abaci Robot <ab...@linux.alibaba.com>
Signed-off-by: Jiapeng Chong <jiapeng.ch...@linux.alibaba.com>
---
 tools/testing/selftests/bpf/progs/fentry_test.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/testing/selftests/bpf/progs/fentry_test.c 
b/tools/testing/selftests/bpf/progs/fentry_test.c
index 5f645fd..52a550d 100644
--- a/tools/testing/selftests/bpf/progs/fentry_test.c
+++ b/tools/testing/selftests/bpf/progs/fentry_test.c
@@ -64,7 +64,7 @@ struct bpf_fentry_test_t {
 SEC("fentry/bpf_fentry_test7")
 int BPF_PROG(test7, struct bpf_fentry_test_t *arg)
 {
-       if (arg == 0)
+       if (!arg)
                test7_result = 1;
        return 0;
 }
-- 
1.8.3.1