NuPlayerDecoder: report error in case of audio sink open error.

Bug: 21093153.
Change-Id: I77e03a620b43967991dcee9d6ca01f67c8b7a02e
(cherry picked from commit 15ce09dddf830d6a6ca097c5ec0a7ec7c35b6b3a)
diff --git a/media/libmediaplayerservice/nuplayer/NuPlayerDecoder.cpp b/media/libmediaplayerservice/nuplayer/NuPlayerDecoder.cpp
index 3646828..c005f3f 100644
--- a/media/libmediaplayerservice/nuplayer/NuPlayerDecoder.cpp
+++ b/media/libmediaplayerservice/nuplayer/NuPlayerDecoder.cpp
@@ -635,8 +635,11 @@
             flags = AUDIO_OUTPUT_FLAG_NONE;
         }
 
-        mRenderer->openAudioSink(
+        status_t err = mRenderer->openAudioSink(
                 format, false /* offloadOnly */, hasVideo, flags, NULL /* isOffloaed */);
+        if (err != OK) {
+            handleError(err);
+        }
     }
 }