Merge pull request #163 from sthuebner/shutdownNow

RefreshableResponseProvider.shutdown without waiting for queued tasks

Author: sthuebner

here-oauth-client/src/main/java/com/here/account/util/RefreshableResponseProvider.java

@@ -199,13 +199,13 @@ public interface ExpiringResponse {
   }
 
   /**
-   * Shutdown the background threads
+   * Shutdown the background threads without waiting for queued tasks
    */
   public void shutdown() {
     if (started) {
       try {
         LOG.info("Shutting down refresh token thread");
-        scheduledExecutorService.shutdown();
+        scheduledExecutorService.shutdownNow();
       } finally {
         started = false;
       }