Fix missing of some translations

Task-number: QTCREATORBUG-13649
Change-Id: I69f78b3b8d2366003bfce81a2afba0068e716d22
Reviewed-by: hjk <hjk@theqtcompany.com>
Reviewed-by: Eike Ziller <eike.ziller@theqtcompany.com>

src/plugins/texteditor/texteditoractionhandler.cpp

@@ -56,6 +56,7 @@ namespace Internal {
 
 class TextEditorActionHandlerPrivate : public QObject
 {
+    Q_DECLARE_TR_FUNCTIONS(TextEditor::Internal::TextEditorActionHandler)
 public:
     TextEditorActionHandlerPrivate(TextEditorActionHandler *parent,
                                    Core::Id contextId,