udacityandroid/Helper Method - releaseMediaPlayer()

## Helper Method - releaseMediaPlayer()
/**
 * Clean up the media player by releasing its resources.
 */
private void releaseMediaPlayer() {
    // If the media player is not null, then it may be currently playing a sound.
    if (mMediaPlayer != null) {
        // Regardless of the current state of the media player, release its resources
        // because we no longer need it.
        mMediaPlayer.release();

        // Set the media player back to null. For our code, we've decided that
        // setting the media player to null is an easy way to tell that the media player
        // is not configured to play an audio file at the moment.
        mMediaPlayer = null;
    }
}
	/**
	* Clean up the media player by releasing its resources.
	*/
	private void releaseMediaPlayer() {
	// If the media player is not null, then it may be currently playing a sound.
	if (mMediaPlayer != null) {
	// Regardless of the current state of the media player, release its resources
	// because we no longer need it.
	mMediaPlayer.release();

	// Set the media player back to null. For our code, we've decided that
	// setting the media player to null is an easy way to tell that the media player
	// is not configured to play an audio file at the moment.
	mMediaPlayer = null;
	}
	}