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>

diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index 9570458..df08ace 100644 (file)
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -6748,7 +6748,6 @@ out:
                free_extent_map(em);
                return ERR_PTR(err);
        }
-       BUG_ON(!em); /* Error is always set */
        return em;
 }