Don't use runBlocking if async init completed

Change-Id: I641187ce277f434c6fca49a11b3cfccd50ecf5da

app/src/main/java/com/google/samples/apps/nowinandroid/util/ImageLoaderAsyncFactory.kt

@@ -55,5 +55,8 @@ class ImageLoaderAsyncFactory @Inject constructor(
      * Most likely this will be already initialized by the time we want to show an image on the screen.
      */
     override fun newImageLoader() =
-        trace("NiaImageLoader.runBlocking") { runBlocking { asyncNewImageLoader.await() } }
+        trace("NiaImageLoader.runBlocking") {
+            if (asyncNewImageLoader.isCompleted) asyncNewImageLoader.getCompleted() 
+            else runBlocking { asyncNewImageLoader.await() }
+        }
 }