QAudioInput example corrections

http://doc.trolltech.com/latest/qaudioinput.html
The Detailed Description contains an example where QFile outputFile is used in two different ways.
It is declared as QFile outputFile; // class member.
Then used in audio->start(outputFile), but QAudioInput::start takes a QIODevice pointer.
Later, it is used again in outputFile->close();
Parts of the code treat it as an instance variable, so a correction could be to change to audio->start(&outputFile), and outputFile.close();
QAudioOutput has a similar error.