Pull xfs fixes from Darrick Wong:
- fix some compiler warnings
- fix block reservations for transactions created during log recovery
- fix resource leaks when respecifying mount options
* tag 'xfs-4.16-fixes-2' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux:
xfs: fix potential memory leak in mount option parsing
xfs: reserve blocks for refcount / rmap log item recovery
xfs: use memset to initialize xfs_scrub_agfl_info