title: Application is Crashing when no phone number is present
body: <p>Here is a better example:</p>
  
  <pre><code>let person: ABRecordRef = ABPersonCreate().takeRetainedValue()
  
  let phoneNos = ABRecordCopyValue(person, kABPersonPhoneProperty).takeRetainedValue()
  
  if ABMultiValueGetCount(phoneNos) &gt; 0 {
      print("yay") } else {
      print("nay") //you will never see this }
  </code></pre>
  
  <p>Always crashes.</p>
  
  <pre><code>let person: ABRecordRef = ABPersonCreate().takeRetainedValue()
  //lets add a number then
  let phoneNumbers: ABMutableMultiValue =
  ABMultiValueCreateMutable(ABPropertyType(kABMultiStringPropertyType)).takeRetainedValue()
  ABMultiValueAddValueAndLabel(phoneNumbers, "1234", kABPersonPhoneMainLabel, nil)
  ABRecordSetValue(person, kABPersonPhoneProperty, phoneNumbers, nil)
  
  let phoneNos = ABRecordCopyValue(person, kABPersonPhoneProperty).takeRetainedValue()
  
  if ABMultiValueGetCount(phoneNos) &gt; 0 {
  
      print("yay")
  } else {
      print("nay") //you will never see this
  }
  </code></pre>
  
  <p>Works just fine. 
  I need to check if there is a phone number, how the #$^% am I supposed to do that when ABRecordCopyValue can't return a nil without exploding.</p>