$destroy throws error

[jsedlacek]

Components that use both sub-components and partials throw error on $destroy.

var view = new Vue({
  template: '<div><div v-component="dialog"><div v-partial="hello"></div></div></div>',
  partials: {
    hello: 'Hello {{name}}'
  },
  components: {
    dialog: {
      template: '<content>'
    }
  }
});
view.$mount();
view.$appendTo(document.body);
view.$destroy();

Result:

Error: 'undefined' is not an object (evaluating 'this._directives[i]._teardown')
    {anonymous}() node_modules/vue/src/api/lifecycle.js:87
    ...