Panic in hasher when mounting with vfs-cache and not synced data in the cache

Suspected Bug
11

And here is the fix for my case.
Looking at the code there are probably more cases where the result wrapOpbject is not the right thing to return directly.

diff --git a/backend/hasher/hasher.go b/backend/hasher/hasher.go
--- a/backend/hasher/hasher.go	(revision 169990e270b2977c39bd6ecd8a2921cf30a6d2b7)
+++ b/backend/hasher/hasher.go	(date 1647067536954)
@@ -410,6 +410,9 @@
 // NewObject finds the Object at remote.
 func (f *Fs) NewObject(ctx context.Context, remote string) (fs.Object, error) {
 	o, err := f.Fs.NewObject(ctx, remote)
+	if err != nil {
+		return nil, err
+	}
 	return f.wrapObject(o, err), err
 }