bcachefs: Fix btree iterator leak

this fixes an occasonial btree transaction iterators overflow.

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 2020-11-07 16:55:57 -05:00 • committed by Kent Overstreet
commit 01819cfe37