update comment

src/librustc/hir/map/mod.rs

@@ -542,11 +542,7 @@ impl<'hir> Map<'hir> {
     /// Retrieves the `Node` corresponding to `id`, returning `None` if cannot be found.
     pub fn find(&self, hir_id: HirId) -> Option<Node<'hir>> {
         let node = self.get_entry(hir_id).node;
-        if let Node::Crate(..) = node {
-            None
-        } else {
-            Some(node)
-        }
+        if let Node::Crate(..) = node { None } else { Some(node) }
     }
 
     /// Similar to `get_parent`; returns the parent HIR Id, or just `hir_id` if there

src/librustc_hir/hir.rs

@@ -1901,7 +1901,7 @@ pub enum ImplItemKind<'hir> {
     /// An associated constant of the given type, set to the constant result
     /// of the expression.
     Const(&'hir Ty<'hir>, BodyId),
-    /// A method implementation with the given signature and body.
+    /// An associated function implementation with the given signature and body.
     Fn(FnSig<'hir>, BodyId),
     /// An associated type.
     TyAlias(&'hir Ty<'hir>),