Fixed another GoogleApiClient not connected error

* Added isConnected checks to all remaining usages.

Author: jkasten2

OneSignalSDK/onesignal/src/main/java/com/onesignal/LocationGMS.java

@@ -302,7 +302,9 @@ public void onLocationChanged(Location location) {
    static class FusedLocationApiWrapper {
       @SuppressWarnings("MissingPermission")
       static PendingResult<Status> requestLocationUpdates(GoogleApiClient googleApiClient, LocationRequest locationRequest, LocationListener locationListener) {
-         return LocationServices.FusedLocationApi.requestLocationUpdates(googleApiClient, locationRequest, locationListener);
+         if (googleApiClient.isConnected())
+            return LocationServices.FusedLocationApi.requestLocationUpdates(googleApiClient, locationRequest, locationListener);
+         return null;
       }
 
       static PendingResult<Status> removeLocationUpdates(GoogleApiClient googleApiClient, LocationListener locationListener) {
@@ -313,11 +315,13 @@ static PendingResult<Status> removeLocationUpdates(GoogleApiClient googleApiClie
 
       @SuppressWarnings("MissingPermission")
       static Location getLastLocation(GoogleApiClient googleApiClient) {
-         return LocationServices.FusedLocationApi.getLastLocation(googleApiClient);
+         if (googleApiClient.isConnected())
+            return LocationServices.FusedLocationApi.getLastLocation(googleApiClient);
+         return null;
       }
    }
 
-   static class LocationHandlerThread extends HandlerThread {
+   private static class LocationHandlerThread extends HandlerThread {
       Handler mHandler = null;
 
       LocationHandlerThread() {