btrfs-progs: Fix a memleak in btrfs_scan_lblkid().

In btrfs_scan_lblkid(), blkid_get_cache() is called but cache not freed.
This patch adds blkid_put_cache() to free it.

Signed-off-by: Qu Wenruo <quwenruo@cn.fujitsu.com>
Signed-off-by: David Sterba <dsterba@suse.cz>
Signed-off-by: Chris Mason <clm@fb.com>

1 files changed, 1 insertions, 0 deletions

diff --git a/utils.c b/utils.c
index 78e4ba1c..013d74f9 100644
--- a/utils.c
+++ b/utils.c
@@ -2064,6 +2064,7 @@ int btrfs_scan_lblkid(int update_kernel)
 			btrfs_register_one_device(path);
 	}
 	blkid_dev_iterate_end(iter);
+	blkid_put_cache(cache);
 	return 0;
 }