title: Unresolved Identifier - SKErrorPaymentCancelled
body: <p>I updated to the latest version of Xcode 7.3 with the release of iOS 9.3 &amp; OSX 10.11.4 (inclusive of Swift 2.2) yesterday.</p>
  
  <p>When I build my app I get an error stating
  <code>Use of unresolved identifier 'SKErrorPaymentCancelled'</code> which I use to check if the user has cancelled a payment. I don't do anything special with it, just log it (as seen below).</p>
  
  <pre><code>private func failedTransaction(transaction: SKPaymentTransaction) {
      print("failedTransaction...")
      if transaction.error!.code == SKErrorPaymentCancelled {
          print("Transaction Cancelled: \(transaction.error!.localizedDescription)")
      }
      else {
          print("Transaction Error: \(transaction.error!.localizedDescription)")
      }
      SKPaymentQueue.defaultQueue().finishTransaction(transaction)
  }
  </code></pre>
  
  <p>I can't find anything in the Swift 2.2 changelog that states anything within StoreKit was changed. This worked fine before I updated.</p>
  
  <p>Is anyone else seeing this issue?</p>