Fix for unused value error on Travis.
Fix for unused value error on Travis.

davidmdavis/contentful.objc,contentful/contentful.objc,danieleggert/contentful.objc,akfreas/contentful.objc,akfreas/contentful.objc,danieleggert/contentful.objc,contentful/contentful.objc,davidmdavis/contentful.objc,davidmdavis/contentful.objc,danieleggert/contentful.objc,akfreas/contentful.objc,contentful/contentful.objc