added null check before initialising LatLng after receiving location … (commons-app#1791)

* added null check before initialising LatLng after receiving location permission

* flipped null==lastKL with lastKL==null

Author: ashishkumar468

app/src/main/java/fr/free/nrw/commons/location/LocationServiceManager.java

@@ -106,6 +106,9 @@ public LatLng getLKL() {
             if (lastKL == null) {
                 lastKL = locationManager.getLastKnownLocation(LocationManager.NETWORK_PROVIDER);
             }
+            if (lastKL == null) {
+                return null;
+            }
             return LatLng.from(lastKL);
         } else {
             return null;