bcachefs: Fix try_decrease_writepoints()

We were freeing open buckets on the writepoint list, but forgetting to
take them off the writepoint list - whoops

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
This commit is contained in:
Kent Overstreet 2023-07-09 13:49:34 -04:00
commit e8ee5cc733