boot loader: blacklist menu: Add "Return to ..." item

src/system/boot/loader/menu.cpp

@@ -622,9 +622,7 @@ public:
 	{
 		_DeleteItems();
 
-		if (fDirectory == NULL)
-			return;
-
+		if (fDirectory != NULL) {
 			void* cookie;
 			if (fDirectory->Open(&cookie, O_RDONLY) == B_OK) {
 				Node* node;
@@ -644,6 +642,11 @@ public:
 			SortItems(&BlacklistMenuItem::Less);
 		}
 
+		if (CountItems() > 0)
+			AddSeparatorItem();
+		AddItem(new(nothrow) MenuItem("Return to parent directory"));
+	}
+
 	virtual void Exited()
 	{
 		_DeleteItems();
@@ -725,6 +728,10 @@ public:
 			SetDirectory(NULL);
 
 		BlacklistMenu::Entered();
+
+		// rename last item
+		if (MenuItem* item = ItemAt(CountItems() - 1))
+			item->SetLabel("Return to safe mode menu");
 	}
 
 	virtual void Exited()