Fix Vestige file browser filter (#7816)

- Remove pointless *.exe option
- Add an "All VST files" option on Linux when there is both LinuxVST and Wine VST support
- Remove *.dll option from Linux builds without Wine VST support (i.e. LinuxVST-only builds)

plugins/Vestige/Vestige.cpp

@@ -79,10 +79,14 @@ Plugin::Descriptor Q_DECL_EXPORT  vestige_plugin_descriptor =
 	0x0100,
 	Plugin::Type::Instrument,
 	new PluginPixmapLoader( "logo" ),
-#ifdef LMMS_BUILD_LINUX
-	"dll,so",
-#else
+#if defined(LMMS_BUILD_WIN32)
 	"dll",
+#elif defined(LMMS_BUILD_LINUX)
+#	if defined(LMMS_HAVE_VST_32) || defined(LMMS_HAVE_VST_64)
+		"dll,so",
+#	else
+		"so",
+#	endif
 #endif
 	nullptr,
 } ;
@@ -669,13 +673,17 @@ void VestigeInstrumentView::openPlugin()
 
 	// set filters
 	QStringList types;
-	types << tr( "DLL-files (*.dll)" )
-		<< tr( "EXE-files (*.exe)" )
-#ifdef LMMS_BUILD_LINUX
-		<< tr( "SO-files (*.so)" )
+#if defined(LMMS_BUILD_WIN32)
+	types << tr("VST2 files (*.dll)");
+#elif defined(LMMS_BUILD_LINUX)
+#	if defined(LMMS_HAVE_VST_32) || defined(LMMS_HAVE_VST_64)
+		types << tr("All VST files (*.dll *.so)")
+			<< tr("Windows VST2 files (*.dll)");
+#	endif
+	types << tr("LinuxVST files (*.so)");
 #endif
-		;
-	ofd.setNameFilters( types );
+
+	ofd.setNameFilters(types);
 
 	if( m_vi->m_pluginDLL != "" )
 	{