Delete spectseq on error conditions in VowelChartDir.

src/vowelchart.cpp

 /***************************************************************************
  *   Copyright (C) 2005 to 2013 by Jonathan Duddington                     *
  *   email: [email protected]                                    *
- *   Copyright (C) 2013 Reece H. Dunn                                      *
+ *   Copyright (C) 2013-2015 Reece H. Dunn                                 *
  *                                                                         *
  *   This program is free software; you can redistribute it and/or modify  *
  *   it under the terms of the GNU General Public License as published by  *
 		if(stream.Ok() == FALSE)
 		{
 			path = wxFindNextFile();
+			delete spectseq;
 			continue;
 		}
 		spectseq->Load(stream);