btrfs: remove spurious BUG_ON in btrfs_get_extent

That BUG_ON cannot ever trigger because as the comment there states -
'err' is always set. Simply remove it as it brings no value.

Signed-off-by: Nikolay Borisov <nborisov@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Nikolay Borisov 2020-08-03 12:43:18 +03:00 • committed by David Sterba
commit 57297c1e8e