xcode 6.4 build error

[littleplayer]

[self.layer.presentationLayer ?: self.layer bounds];
line 466-468
return
underlyingLayer && !underlyingLayer.hidden &&
self.blurEnabled && [FXBlurScheduler sharedInstance].blurEnabled &&
!CGRectIsEmpty([self.layer.presentationLayer ?: self.layer bounds]) && !CGRectIsEmpty(underlyingLayer.bounds);