linux-next: build warning after merge of the pidfd tree

Hi all,

After merging the pidfd tree, today's linux-next build (powerpc
ppc64_defconfig) produced this warning:

fs/xfs/xfs_ioctl32.c: In function 'xfs_file_compat_ioctl':
fs/xfs/xfs_ioctl32.c:441:20: warning: unused variable 'mp' [-Wunused-variable]
  441 |  struct xfs_mount *mp = ip->i_mount;
      |                    ^~

Introduced by commit

  f736d93d76d3 ("xfs: support idmapped mounts")

-- 
Cheers,
Stephen Rothwell