[PATCH] fs: tree-checker: fix missing brace warning for old compilers

[Pujin Shi]

For older versions of gcc, the array = {0}; will cause warnings:

fs/btrfs/tree-checker.c: In function 'check_root_item':
fs/btrfs/tree-checker.c:1038:9: warning: missing braces around initializer 
[-Wmissing-braces]
  struct btrfs_root_item ri = { 0 };
         ^
fs/btrfs/tree-checker.c:1038:9: warning: (near initialization for 'ri.inode') 
[-Wmissing-braces]

1 warnings generated

Fixes: 443b313c7ff8 ("btrfs: tree-checker: fix false alert caused by legacy 
btrfs root item")
Signed-off-by: Pujin Shi <shipuji...@gmail.com>
---
 fs/btrfs/tree-checker.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs/btrfs/tree-checker.c b/fs/btrfs/tree-checker.c
index f0ffd5ee77bd..5028b3af308c 100644
--- a/fs/btrfs/tree-checker.c
+++ b/fs/btrfs/tree-checker.c
@@ -1035,7 +1035,7 @@ static int check_root_item(struct extent_buffer *leaf, 
struct btrfs_key *key,
                           int slot)
 {
        struct btrfs_fs_info *fs_info = leaf->fs_info;
-       struct btrfs_root_item ri = { 0 };
+       struct btrfs_root_item ri = {};
        const u64 valid_root_flags = BTRFS_ROOT_SUBVOL_RDONLY |
                                     BTRFS_ROOT_SUBVOL_DEAD;
        int ret;
-- 
2.18.1