title: instantiateviewcontrollerwithidentifier leak
body: <p>I am frustrated with this code...</p>
  
  <pre><code>    UIStoryboard *storyboard = [UIStoryboard storyboardWithName:@"MainStoryboard" bundle:[NSBundle mainBundle]];
      DoctorRecordController *object=[storyboard instantiateViewControllerWithIdentifier:@"DoctorRecord"];##############leaking code
      object.modalTransitionStyle = UIModalTransitionStyleCoverVertical;
      [self presentViewController:object animated:YES completion:^(void){            
      }];
  </code></pre>
  
  <p>instrument is showing a leak in above code.  How can I remove the leak?</p>