When we're in the 'playback complete' state, don't consider pausing

an error. This makes 'playback complete' essentially equivalent to
being paused at the end, and treats it the same as being paused at
any other position.

media/libmedia/mediaplayer.cpp

@@ -304,7 +304,7 @@ status_t MediaPlayer::pause()
 {
     LOGV("pause");
     Mutex::Autolock _l(mLock);
-    if (mCurrentState & MEDIA_PLAYER_PAUSED)
+    if (mCurrentState & (MEDIA_PLAYER_PAUSED|MEDIA_PLAYER_PLAYBACK_COMPLETE))
         return NO_ERROR;
     if ((mPlayer != 0) && (mCurrentState & MEDIA_PLAYER_STARTED)) {
         status_t ret = mPlayer->pause();