[PATCH] maple_tree: Fix warning comparing pointer to 0

[Jiapeng Chong]

Avoid pointer type value compared with 0 to make code clear.

./tools/testing/radix-tree/maple.c:34142:15-16: WARNING comparing pointer to 0.

Reported-by: Abaci Robot <abaci at linux.alibaba.com>
Closes: https://bugzilla.openanolis.cn/show_bug.cgi?id=7696
Signed-off-by: Jiapeng Chong <jiapeng.chong at linux.alibaba.com>
---
 tools/testing/radix-tree/maple.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/tools/testing/radix-tree/maple.c b/tools/testing/radix-tree/maple.c
index 56ae47291ee0..687886cebd9d 100644
--- a/tools/testing/radix-tree/maple.c
+++ b/tools/testing/radix-tree/maple.c
@@ -34139,7 +34139,7 @@ STORE, 140501948112896, 140501948116991,
 	mt_init_flags(mt, MT_FLAGS_ALLOC_RANGE);
 	check_erase2_testset(mt, set27, ARRAY_SIZE(set27));
 	rcu_barrier();
-	MT_BUG_ON(mt, 0 != mtree_load(mt, 140415537422336));
+	MT_BUG_ON(mt, NULL != mtree_load(mt, 140415537422336));
 	mt_set_non_kernel(0);
 	mt_validate(mt);
 	mtree_destroy(mt);
@@ -34263,7 +34263,7 @@ STORE, 140501948112896, 140501948116991,
 	mt_init_flags(mt, MT_FLAGS_ALLOC_RANGE);
 	check_erase2_testset(mt, set37, ARRAY_SIZE(set37));
 	rcu_barrier();
-	MT_BUG_ON(mt, 0 != mtree_load(mt, 94637033459712));
+	MT_BUG_ON(mt, NULL != mtree_load(mt, 94637033459712));
 	mt_validate(mt);
 	mtree_destroy(mt);
 
@@ -34271,7 +34271,7 @@ STORE, 140501948112896, 140501948116991,
 	mt_init_flags(mt, MT_FLAGS_ALLOC_RANGE);
 	check_erase2_testset(mt, set38, ARRAY_SIZE(set38));
 	rcu_barrier();
-	MT_BUG_ON(mt, 0 != mtree_load(mt, 94637033459712));
+	MT_BUG_ON(mt, NULL != mtree_load(mt, 94637033459712));
 	mt_validate(mt);
 	mtree_destroy(mt);
 
-- 
2.20.1.7.g153144c