Better ghost notes context menu handling.

Author: CYBERDEViLNL

src/tracks/Pattern.cpp

@@ -676,20 +676,13 @@ void PatternView::constructContextMenu( QMenu * _cm )
 	connect( a, SIGNAL( triggered( bool ) ),
 					this, SLOT( openInPianoRoll() ) );
 
-	if( gui->pianoRoll()->currentPattern() && !m_pat->empty() )
-	{
-		QAction * b = new QAction( embed::getIconPixmap( "ghost_note" ),
+	QAction * b = new QAction( embed::getIconPixmap( "ghost_note" ),
 						tr( "Set as ghost in piano-roll" ), _cm );
-		_cm->insertAction( _cm->actions()[1], b );
-		connect( b, SIGNAL( triggered( bool ) ),
-						this, SLOT( setGhostInPianoRoll() ) );
-		_cm->insertSeparator( _cm->actions()[2] );
-	}
-	else
-	{
-		_cm->insertSeparator( _cm->actions()[1] );
-	}
-
+	if( m_pat->empty() ) { b->setEnabled( false ); }
+	_cm->insertAction( _cm->actions()[1], b );
+	connect( b, SIGNAL( triggered( bool ) ),
+					this, SLOT( setGhostInPianoRoll() ) );
+	_cm->insertSeparator( _cm->actions()[2] );
 	_cm->addSeparator();
 
 	_cm->addAction( embed::getIconPixmap( "edit_erase" ),