Use capture list

RxExample/RxExample/Services/GeolocationService.swift

@@ -26,13 +26,12 @@ class GeolocationService {
         locationManager.distanceFilter = kCLDistanceFilterNone;
         locationManager.desiredAccuracy = kCLLocationAccuracyBestForNavigation;
         
-        weak var weakLocationManager = self.locationManager
-        autorized = Observable.deferred {
+        autorized = Observable.deferred { [weak locationManager] in
                 let status = CLLocationManager.authorizationStatus()
-                guard let strongLocationManager = weakLocationManager else {
+                guard let locationManager = locationManager else {
                     return Observable.just(status)
                 }
-                return strongLocationManager
+                return locationManager
                     .rx_didChangeAuthorizationStatus
                     .startWith(status)
             }