Gui: [skip ci] add option to automatically close task dialog if undo/redo was pressed

src/Gui/TaskView/TaskDialog.cpp

@@ -38,7 +38,9 @@ using namespace Gui::TaskView;
 //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 
 TaskDialog::TaskDialog()
-    : QObject(0), pos(North), escapeButton(true)
+    : QObject(nullptr), pos(North)
+    , escapeButton(true)
+    , autoCloseTransaction(false)
 {
 
 }
@@ -84,6 +86,11 @@ void TaskDialog::closed()
 
 }
 
+void TaskDialog::autoClosedOnTransactionChange()
+{
+
+}
+
 void TaskDialog::clicked(int)
 {