[PATCH] ext4: block_validity: Remove unnecessary ‘NULL’ values from new_node

[Li zeming]

new_node is assigned first, so it does not need to initialize the
assignment.

Signed-off-by: Li zeming <zeming@xxxxxxxxxxxx>
---
 fs/ext4/block_validity.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs/ext4/block_validity.c b/fs/ext4/block_validity.c
index 6fe3c941b5651..87ee3a17bd29c 100644
--- a/fs/ext4/block_validity.c
+++ b/fs/ext4/block_validity.c
@@ -72,7 +72,7 @@ static int add_system_zone(struct ext4_system_blocks *system_blks,
 {
 	struct ext4_system_zone *new_entry, *entry;
 	struct rb_node **n = &system_blks->root.rb_node, *node;
-	struct rb_node *parent = NULL, *new_node = NULL;
+	struct rb_node *parent = NULL, *new_node;
 
 	while (*n) {
 		parent = *n;
-- 
2.18.2