title: ABPersonCopyImageDataWithFormat deletes contacts image
body: <p>I have this code to store all contacts image in dictionary. But, in some cases when it is interrupted, the image for contacts just disappear.</p>
  
  <pre><code>dispatch_async(dispatch_get_main_queue(), ^{            
  
          if (ABPersonHasImageData(_personObj)) {
  
              // UIImage *image = [UIImage imageWithData:(__bridge NSData*) ABPersonCopyImageDataWithFormat(_personObj, kABPersonImageFormatThumbnail)];
              NSData *data = (__bridge NSData *) ABPersonCopyImageDataWithFormat(_personObj, kABPersonImageFormatThumbnail);
              UIImage *image = [UIImage imageWithData:data scale:1];
              int recordId = ABRecordGetRecordID(_personObj);
              [contactImagesDi setValue:image forKey:[NSNumber numberWithInt:recordId]];
  
          }
  
  });
  </code></pre>