From 6202dbc0a805af099aac171903934bfc14ead6fa Mon Sep 17 00:00:00 2001
From: David Edmundson <kde@davidedmundson.co.uk>
Date: Tue, 16 Feb 2021 08:17:17 +0000
Subject: [PATCH] Guard against DataSource being deleted during transfer

During a drag the source can disappear at any time. The other client
will be notified, but it may have actions in flight.

Other methods were guarded but not data_offer_finished.
---
 src/wayland/dataoffer_interface.cpp | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/wayland/dataoffer_interface.cpp b/src/wayland/dataoffer_interface.cpp
index f485bad573..934cb9f780 100644
--- a/src/wayland/dataoffer_interface.cpp
+++ b/src/wayland/dataoffer_interface.cpp
@@ -75,6 +75,9 @@ void DataOfferInterfacePrivate::data_offer_destroy(QtWaylandServer::wl_data_offe
 void DataOfferInterfacePrivate::data_offer_finish(Resource *resource)
 {
     Q_UNUSED(resource)
+    if (!source) {
+        return;
+    }
     source->dndFinished();
     // TODO: It is a client error to perform other requests than wl_data_offer.destroy after this one
 }