fuse: bugfix: ignore empty tags

internal/fuse/snapshots_dir.go

@@ -78,11 +78,13 @@ func updateTagNames(d *TagsDir) {
 		d.tags = make(map[string]bool, len(d.root.snapshots))
 		for _, snapshot := range d.root.snapshots {
 			for _, tag := range snapshot.Tags {
+				if tag != "" {
 					d.tags[tag] = true
 				}
 			}
 		}
 	}
+}
 
 // read host names from the current repository-state.
 func updateHostsNames(d *HostsDir) {