[PATCH] selftests/bpf: fix warning comparing pointer to 0

Fix the following coccicheck warning:

./tools/testing/selftests/bpf/progs/fexit_test.c:77:15-16: WARNING
comparing pointer to 0.

./tools/testing/selftests/bpf/progs/fexit_test.c:68:12-13: WARNING
comparing pointer to 0.

Reported-by: Abaci Robot <redacted>
Signed-off-by: Jiapeng Chong <redacted>
---
 tools/testing/selftests/bpf/progs/fexit_test.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/tools/testing/selftests/bpf/progs/fexit_test.c b/tools/testing/selftests/bpf/progs/fexit_test.c
index 0952aff..8f1ccb7 100644
--- a/tools/testing/selftests/bpf/progs/fexit_test.c
+++ b/tools/testing/selftests/bpf/progs/fexit_test.c

@@ -65,7 +65,7 @@ struct bpf_fentry_test_t {
 SEC("fexit/bpf_fentry_test7")
 int BPF_PROG(test7, struct bpf_fentry_test_t *arg)
 {
-	if (arg == 0)
+	if (!arg)
 		test7_result = 1;
 	return 0;
 }

@@ -74,7 +74,7 @@ int BPF_PROG(test7, struct bpf_fentry_test_t *arg)
 SEC("fexit/bpf_fentry_test8")
 int BPF_PROG(test8, struct bpf_fentry_test_t *arg)
 {
-	if (arg->a == 0)
+	if (!arg->a)
 		test8_result = 1;
 	return 0;
 }

-- 
1.8.3.1

Hello:

This patch was applied to bpf/bpf-next.git (refs/heads/master):

On Tue, 16 Mar 2021 15:59:37 +0800 you wrote:

Fix the following coccicheck warning:

./tools/testing/selftests/bpf/progs/fexit_test.c:77:15-16: WARNING
comparing pointer to 0.

./tools/testing/selftests/bpf/progs/fexit_test.c:68:12-13: WARNING
comparing pointer to 0.

[...]

Here is the summary with links:
  - selftests/bpf: fix warning comparing pointer to 0
    https://git.kernel.org/bpf/bpf-next/c/ebda107e5f22

You are awesome, thank you!
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