nilfs2: remove space before comma

nilfs2: remove space before comma

Fix checkpatch.pl error "ERROR: space prohibited before that ','
(ctx:WxW)" at nilfs_sufile_set_suinfo().

This also fixes checkpatch.pl warning "WARNING: Prefer 'unsigned int' to
bare use of 'unsigned'" at nilfs_sufile_set_suinfo() and
nilfs_sufile_get_suinfo().

Link: http://lkml.kernel.org/r/1461935747-10380-3-git-send-email-konishi.ryusuke@lab.ntt.co.jp
Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>