bcachefs: Fix a faulty assertion

If journal replay hasn't finished, the journal can't be empty - oops.

Signed-off-by: Kent Overstreet <kent.overstreet@gmail.com>
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
This commit is contained in:
Kent Overstreet 2021-01-21 19:15:49 -05:00 • committed by Kent Overstreet
commit fdbb88ac01