Fix LocationUtils factories

onionwrapper-android/src/main/java/org/briarproject/onionwrapper/AndroidLocationUtilsFactory.java

@@ -2,9 +2,12 @@ package org.briarproject.onionwrapper;
 
 import android.app.Application;
 
+import org.briarproject.nullsafety.NotNullByDefault;
+
+@NotNullByDefault
 public class AndroidLocationUtilsFactory {
 
-    public static AndroidLocationUtils createAndroidLocationUtils(Application app) {
+    public static LocationUtils createAndroidLocationUtils(Application app) {
         return new AndroidLocationUtils(app);
     }
 

onionwrapper-java/src/main/java/org/briarproject/onionwrapper/JavaLocationUtilsFactory.java

 package org.briarproject.onionwrapper;
 
+import org.briarproject.nullsafety.NotNullByDefault;
+
+@NotNullByDefault
 public class JavaLocationUtilsFactory {
 
-    public static JavaLocationUtils createJavaLocationUtils() {
+    public static LocationUtils createJavaLocationUtils() {
         return new JavaLocationUtils();
     }