bcachefs: Fix an exiting of uninitialized iterator

bch2_dirent_lookup had an error path where we'd exit a btree_iter that
hadn't been properly initialized.

Signed-off-by: Kent Overstreet <kent.overstreet@gmail.com>
This commit is contained in:
Kent Overstreet 2021-11-13 12:57:00 -05:00 • committed by Kent Overstreet
commit 496b723879