fix

src/location.rs

@@ -50,8 +50,10 @@ impl Location {
         let locations = get_locations!();
         for loc in locations.keys() {
             let loc = locations.get(loc).unwrap();
-            if *loc.parent.as_ref().unwrap_or(&String::new()) == self.id {
-                ret.push(loc.clone());
+            if let Some(parent) = &loc.parent {
+                if *parent == self.id {
+                    ret.push(loc.clone());
+                }
             }
         }