From bbfdf752834f9ae5ae74263a9805c91779fda91f Mon Sep 17 00:00:00 2001
From: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
Date: Fri, 12 Jan 2024 11:19:52 +0100
Subject: [PATCH] qt-quick: initialize prev and next when adding chart items

The code assumed that when adding chart items to lists, prev
and next are initialized to null. Make this more robust.

Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
---
 qt-quick/chartview.cpp | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/qt-quick/chartview.cpp b/qt-quick/chartview.cpp
index 1fb4e7607..46ed04753 100644
--- a/qt-quick/chartview.cpp
+++ b/qt-quick/chartview.cpp
@@ -235,11 +235,13 @@ void ChartView::ChartItemList::remove(ChartItem &item)
 void ChartView::ChartItemList::append(ChartItem &item)
 {
 	if (!first) {
+		item.prev = nullptr;
 		first = &item;
 	} else {
 		item.prev = last;
 		last->next = &item;
 	}
+	item.next = nullptr;
 	last = &item;
 }