Fix RemoteVstPlugin not exiting when effect removed

plugins/VstEffect/VstEffectControlDialog.cpp

@@ -289,7 +289,12 @@ void VstEffectControlDialog::showEvent(QShowEvent *_se)
 
 VstEffectControlDialog::~VstEffectControlDialog()
 {
-	//delete m_pluginWidget;
+#if !(QT_VERSION < 0x050000 && defined(LMMS_BUILD_LINUX))
+	if (m_pluginWidget && layout()) {
+		layout()->removeWidget(m_pluginWidget);
+		m_pluginWidget->setParent(nullptr);
+	}
+#endif
 }
 
 

src/gui/widgets/EffectView.cpp

@@ -164,18 +164,7 @@ EffectView::EffectView( Effect * _model, QWidget * _parent ) :
 
 EffectView::~EffectView()
 {
-
-#ifdef LMMS_BUILD_LINUX
-
 	delete m_subWindow;
-#else
-	if( m_subWindow )
-	{
-		// otherwise on win32 build VST GUI can get lost
-		m_subWindow->hide();
-	}
-#endif
-
 }