title: xcode 8 beta 3: Expected ',' joining parts of a multi-clause condition
body: <p>Getting a new warning in xcode 8 beta 3.  What is wrong with this syntax, or is there a bug in xcode?</p>
  
  <p>SwiftyJSON.swift:772:35: Expected ',' joining parts of a multi-clause condition</p>
  
  <pre><code>if let errorValue = error where errorValue.code == ErrorNotExist {
  }
  </code></pre>