fix layer tree translation support

Author: jef-n

src/app/CMakeLists.txt

@@ -196,6 +196,7 @@ SET (QGIS_APP_MOC_HDRS
   qgsloadstylefromdbdialog.h
   qgssavestyletodbdialog.h
   qgsshortcutsmanager.h
+  qgsapplayertreeviewmenuprovider.h
 
   qgsmaptooladdfeature.h
   qgsmaptoolcapture.h

src/app/qgsapplayertreeviewmenuprovider.h

@@ -23,6 +23,7 @@ class QgsMapCanvas;
 
 class QgsAppLayerTreeViewMenuProvider : public QObject, public QgsLayerTreeViewMenuProvider
 {
+    Q_OBJECT
   public:
     QgsAppLayerTreeViewMenuProvider( QgsLayerTreeView* view, QgsMapCanvas* canvas );
 
@@ -46,5 +47,4 @@ class QgsAppLayerTreeViewMenuProvider : public QObject, public QgsLayerTreeViewM
     QMap< QgsMapLayer::LayerType, QList< LegendLayerAction > > mLegendLayerActionMap;
 };
 
-
 #endif // QGSAPPLAYERTREEVIEWMENUPROVIDER_H