Don't call dinvoke on Object methods

lib/runtime/dart/core.js

Index: lib/runtime/dart/core.js
diff --git a/lib/runtime/dart/core.js b/lib/runtime/dart/core.js
index 05f795c2d76c200122aef435a712efd157f63a88..4d899fa2581959b36e98ee76c106ff0837c76da0 100644
--- a/lib/runtime/dart/core.js
+++ b/lib/runtime/dart/core.js
@@ -2748,7 +2748,7 @@ var core;
     get hashCode() {
       // Function combine: (dynamic, dynamic) → int
       function combine(part, current) {
-        return dart.as(dart.dbinary(dart.dbinary(dart.dbinary(current, '*', 31), '+', dart.dload(part, 'hashCode')), '&', 1073741823), int);
+        return dart.as(dart.dbinary(dart.dbinary(dart.dbinary(current, '*', 31), '+', part.hashCode), '&', 1073741823), int);
       }
       return combine(this.scheme, combine(this.userInfo, combine(this.host, combine(this.port, combine(this.path, combine(this.query, combine(this.fragment, 1)))))));
     }