fsck.f2fs: add a missing 'fixed' during chk_dentries()

One of the cases would update the dentries but not set
fixed=1 causing the update to not be written out.

Change-Id: I111d599f93f7d5306dacd7d62da946fdb5c262ee
Signed-off-by: JP Abgrall <jpa@google.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
1 file changed