Method updateSampleRate

plugins/GigPlayer/GigPlayer.cpp:902–906

Since the sample rate changes when we start an export, clear all the currently-playing notes when we get this signal. Then, the export won't include leftover notes that were playing in the program.

// currently-playing notes when we get this signal. Then, the export won't
// include leftover notes that were playing in the program.
void GigInstrument::updateSampleRate()
{
	QMutexLocker locker( &m_notesMutex );
	m_notes.clear();
}