xfs_metadump: remove shadow variable

"length" is used in 2 nested inner scopes, which is fairly unclear and
generates a sparse warning.  Rename the inner scope variable for clarity.

Signed-off-by: Eric Sandeen <sandeen@redhat.com>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Eric Sandeen <sandeen@sandeen.net>

1 file changed