Btrfs-progs: fix wrong leaf when checking the trees relationship

The variant named 'leaf' in is_child_root() still hold old result after
we get the next leaf, it make btrfsck returns the wrong result, such as
"unresolved ref root ..", fix it.

Signed-off-by: Miao Xie <miaox@cn.fujitsu.com>

1 files changed, 1 insertions, 0 deletions

diff --git a/btrfsck.c b/btrfsck.c
index 2e81adcf..f09a4a41 100644
--- a/btrfsck.c
+++ b/btrfsck.c
@@ -786,6 +786,7 @@ static int is_child_root(struct btrfs_root *root, u64 parent_root_id,
 
 			if (ret > 0)
 				break;
+			leaf = path.nodes[0];
 		}
 
 		btrfs_item_key_to_cpu(leaf, &key, path.slots[0]);