xfs: use bool instead of int in xfs_rename()

new_parent and src_is_directory are only used in 0/1 context.

Signed-off-by: Fabian Frederick <fabf@skynet.be>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Signed-off-by: Dave Chinner <david@fromorbit.com>

diff --cc fs/xfs/xfs_inode.c
Simple merge