doc: document that reversed paths are for end-host usage

crates/scion-proto/src/path/standard.rs

@@ -277,6 +277,9 @@ where
 
     /// Creates new StandardPath, backed by the provided buffer, by copying and reversing this one.
     ///
+    /// The reversed path is suitable for use from an end-host: its current hop and info field
+    /// indices are set to 0.
+    ///
     /// # Panics
     ///
     /// Panics if the provided buffer does not have the same length as self.raw().
@@ -301,9 +304,8 @@ where
 
     /// Reverses both the raw path and the metadata in the [`Self::meta_header`].
     ///
-    /// Can panic if the meta header is inconsistent with the encoded path or the encoded path
-    /// itself is inconsistent (e.g., the `current_info_field` points to an empty segment).
-    // TODO(jsmith): Check if this panic is actually possible
+    /// The reversed path is suitable for use from an end-host: its current hop and info field
+    /// indices are set to 0.
     pub fn to_reversed(&self) -> StandardPath<Bytes> {
         let mut encoded_path = vec![0u8; self.encoded_path.len()];
         let StandardPath { meta_header, .. } = self.reverse_to_slice(&mut encoded_path);