MidiInWinMM :: closePort might return without calling LeaveCriticalSection about rtmidi HOT 2 OPEN

class LockCriticalSection
{
public:
  LockCriticalSection(CRITICAL_SECTION& sect)
  : sect_(sect)
  {
    EnterCriticalSection(&sect_);
  }

  ~LockCriticalSection()
  {
    LeaveCriticalSection(&sect_);
  }
private:
  CRITICAL_SECTION& sect_;
};

void MidiInWinMM :: closePort( void )
{
  if ( connected_ ) {
    WinMidiData *data = static_cast<WinMidiData *> (apiData_);
    LockCriticalSection lock( data->_mutex );
    midiInReset( data->inHandle );
    midiInStop( data->inHandle );

    for ( size_t i=0; i < data->sysexBuffer.size(); ++i ) {
      int result = midiInUnprepareHeader(data->inHandle, data->sysexBuffer[i], sizeof(MIDIHDR));
      delete [] data->sysexBuffer[i]->lpData;
      delete [] data->sysexBuffer[i];
      if ( result != MMSYSERR_NOERROR ) {
        midiInClose( data->inHandle );
        data->inHandle = 0;
        errorString_ = "MidiInWinMM::openPort: error closing Windows MM MIDI input port (midiInUnprepareHeader).";
        error( RtMidiError::DRIVER_ERROR, errorString_ );
        return;
      }
    }

    midiInClose( data->inHandle );
    data->inHandle = 0;
    connected_ = false;
  }
}