title: Angular 2. Error in Chrome: Cannot find control with unspecified name attribute
body: <p>This <a href="https://plnkr.co/edit/hkk0CANKWRmys9R4gZg1?p=preview" rel="noreferrer">plunker</a> work in Firefox with out any console error, but in Chrome I get message:</p>
  
  <p>Error in formcontrol</p>
  
  <pre><code>&lt;ul&gt;
    &lt;li *ngFor="let item of data"&gt;
      &lt;label&gt;
        &lt;input type="radio" name="radio1"
          [value]="item.id"
          [formControl]="childControl"
          (input)="fn($event.target.value)" &gt;
        &lt;p&gt;{{ item.title }}&lt;/p&gt;
      &lt;/label&gt;
    &lt;/li&gt;
  &lt;/ul&gt;
  </code></pre>
  
  <blockquote>
    <p>Cannot find control with unspecified name attribute</p>
  </blockquote>