fix(decorators): incorrect annotation to decorator adapter

Author: mhevery

modules/angular2/src/util/decorators.ts

@@ -9,8 +9,8 @@ export function makeDecorator(annotationCls) {
  if (!(Reflect && Reflect.getMetadata)) {
  throw 'reflect-metadata shim is required when using class decorators';
  }
- var annotationInstance = Object.create(annotationCls);
- annotationCls.call(annotationInstance, args);
+ var annotationInstance = Object.create(annotationCls.prototype);
+ annotationCls.apply(annotationInstance, args);
  return function(cls) {
  var annotations = Reflect.getMetadata('annotations', cls);
  annotations = annotations || [];
@@ -28,8 +28,8 @@ export function makeParamDecorator(annotationCls) {
  if (!(Reflect && Reflect.getMetadata)) {
  throw 'reflect-metadata shim is required when using parameter decorators';
  }
- var annotationInstance = Object.create(annotationCls);
- annotationCls.call(annotationInstance, args);
+ var annotationInstance = Object.create(annotationCls.prototype);
+ annotationCls.apply(annotationInstance, args);
  return function(cls, unusedKey, index) {
  var parameters = Reflect.getMetadata('parameters', cls);
  parameters = parameters || [];