title: AFNetworking setImageWithURLRequest not setting remote image
body: <p>I'm using AFNetworking's <code>UIImageView+AFNetworking.h</code> to asynchronously load an online image onto a <code>UIImageView</code>. </p>
  
  <p>The remote image loads very well when I use <code>setImageWithURLRequest:</code>, but when I try using <code>setImageWithURLRequest:placeholderImage:success:failure</code> the remote image is downloaded but the UIImageView does not set it as its UIImage. </p>
  
  <p>Here's my code:</p>
  
  <pre><code>@property (strong) IBOutlet UIImageView *imageView;
  
  -(void)viewDidAppear:(BOOL)animated{
      [super viewDidAppear:animated];
  
      [_imageView setImageWithURLRequest:[NSURLRequest requestWithURL:[NSURL URLWithString:@"http://i.imgur.com/fVhhR.png"]]
                         placeholderImage:nil
                                  success:^(NSURLRequest *request , NSHTTPURLResponse *response , UIImage *image ){
                                      NSLog(@"Loaded successfully: %d", [response statusCode]);
                                  }
                                  failure:^(NSURLRequest *request, NSHTTPURLResponse *response, NSError *error){
                                      NSLog(@"failed loading: %@", error);
                                  }
       ];
  }
  </code></pre>
  
  <p>Image always loads successfully, the status code is always <code>200</code>. But I have to add <code>[_imageView setImage:image];</code> to the <code>success</code> block for the <code>UIImageView</code> to set the image. </p>
  
  <p>I'm using iOS 6.0</p>
  
  <p>Any ideas? </p>