fix: impl Trace and Finalize for Path and PathBuf

Author: shruti2522

oscars/src/collectors/mark_sweep/trace.rs

@@ -398,6 +398,22 @@ unsafe impl<K: Eq + Hash + Trace, V: Trace, S: BuildHasher> Trace
     });
 }
 
+#[cfg(feature = "std")]
+impl Finalize for Path {}
+#[cfg(feature = "std")]
+// SAFETY: `Path` doesn't have any inner nodes that need to be marked
+unsafe impl Trace for Path {
+    empty_trace!();
+}
+
+#[cfg(feature = "std")]
+impl Finalize for PathBuf {}
+#[cfg(feature = "std")]
+// SAFETY: `PathBuf` doesn't have any inner nodes that need to be marked
+unsafe impl Trace for PathBuf {
+    empty_trace!();
+}
+
 #[cfg(feature = "std")]
 impl<K: Eq + Hash + Trace, V: Trace, S: BuildHasher> Finalize for HashMap<K, V, S> {}
 #[cfg(feature = "std")]