Fix issue 3126094.

android_media_Visualizer.cpp:
Delete local reference to jArray in captureCallback() in
the case of waveform capture.

Change-Id: Ia822ab6d9945fff93605f7732e56120c19fd42a5

media/jni/audioeffect/android_media_Visualizer.cpp

@@ -131,6 +131,7 @@ static void captureCallback(void* user,
                 samplingrate,
                 0,
                 jArray);
+            env->DeleteLocalRef(jArray);
         }
     }