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 <mi...@cn.fujitsu.com>
---
 btrfsck.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)

diff --git a/btrfsck.c b/btrfsck.c
index 088b9f4..bb1aa76 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]);
-- 
1.7.6.5
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