From f44843d95cb7c874204724dd2e10d99c489cf24e Mon Sep 17 00:00:00 2001
From: Tobias Doerffel <tobias.doerffel@gmail.com>
Date: Thu, 6 Feb 2014 20:58:30 +0100
Subject: [PATCH] VstEffect: added NULL pointer check in closePlugin()

We must not call methods on m_plugin in case there's no valid instance
e.g. due to missing DLL files.

Closes #245.
---
 plugins/vst_effect/VstEffect.cpp | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/plugins/vst_effect/VstEffect.cpp b/plugins/vst_effect/VstEffect.cpp
index a4215cc18..9676f83af 100644
--- a/plugins/vst_effect/VstEffect.cpp
+++ b/plugins/vst_effect/VstEffect.cpp
@@ -1,7 +1,7 @@
 /*
  * VstEffect.cpp - class for handling VST effect plugins
  *
- * Copyright (c) 2006-2010 Tobias Doerffel <tobydox/at/users.sourceforge.net>
+ * Copyright (c) 2006-2014 Tobias Doerffel <tobydox/at/users.sourceforge.net>
  *
  * This file is part of Linux MultiMedia Studio - http://lmms.sourceforge.net
  *
@@ -163,7 +163,7 @@ void VstEffect::openPlugin( const QString & _plugin )
 void VstEffect::closePlugin()
 {
 	m_pluginMutex.lock();
-	if( m_plugin->pluginWidget() != NULL )
+	if( m_plugin && m_plugin->pluginWidget() != NULL )
 	{
 		delete m_plugin->pluginWidget();
 	}