xfs_db uses the xfs_bmbt_rec_32_t type to pass around extent information in a
few places. But everywhere where we actually use it we use the normal
xfs_bmbt_rec_t just casting from/to xfs_bmbt_rec_32_t to pass it around.
Just pass the xfs_bmbt_rec_t directly and thus get rid of the last use
of xfs_bmbt_rec_32_t in xfsprogs.
Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Eric Sandeen <sandeen@sandeen.net>