quota: Handle quotas without quota inodes in dquot_get_state()

Make dquot_get_state() gracefully handle a situation when there are no
quota files present even though quotas are enabled.

Signed-off-by: Jan Kara <jack@suse.cz>
This commit is contained in:
Jan Kara 2019-11-04 11:18:17 +01:00
commit a0828b6ccb