Miscellaneous build / tidy fixes.

components/style/gecko_string_cache/mod.rs

@@ -147,6 +147,13 @@ impl PartialEq for WeakAtom {
     }
 }
 
+impl PartialEq<Atom> for WeakAtom {
+    #[inline]
+    fn eq(&self, other: &Atom) -> bool {
+        self == &**other
+    }
+}
+
 unsafe impl Send for Atom {}
 unsafe impl Sync for Atom {}
 unsafe impl Sync for WeakAtom {}

components/style/gecko_string_cache/namespace.rs

@@ -47,7 +47,7 @@ impl PrecomputedHash for Namespace {
 }
 
 /// A Gecko WeakNamespace is a wrapped WeakAtom.
-#[derive(Hash, Deref)]
+#[derive(Deref, Hash)]
 pub struct WeakNamespace(WeakAtom);
 
 impl Deref for Namespace {