From 22b82fbb9659b3f81dea47a23f1bacbae9c2a4e5 Mon Sep 17 00:00:00 2001
From: Rolf Eike Beer <eb@emlix.com>
Date: Wed, 20 May 2020 09:11:39 +0200
Subject: [PATCH] QVncScreen: fix crash on disconnect client did not request
 cursor

Change-Id: I758c79d87bd239b6fde9bae4e97c5b31450fa813
Reviewed-by: Laszlo Agocs <laszlo.agocs@qt.io>
(cherry picked from commit c4b172b7f0158fccf6d0ac1a72081d0749410b1b)
Reviewed-by: Qt Cherry-pick Bot <cherrypick_bot@qt-project.org>
---
 src/plugins/platforms/vnc/qvncscreen.cpp | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/plugins/platforms/vnc/qvncscreen.cpp b/src/plugins/platforms/vnc/qvncscreen.cpp
index 67d33de2f06..7f418c4e371 100644
--- a/src/plugins/platforms/vnc/qvncscreen.cpp
+++ b/src/plugins/platforms/vnc/qvncscreen.cpp
@@ -139,6 +139,9 @@ void QVncScreen::enableClientCursor(QVncClient *client)
 void QVncScreen::disableClientCursor(QVncClient *client)
 {
 #if QT_CONFIG(cursor)
+    if (!clientCursor)
+        return;
+
     uint clientCount = clientCursor->removeClient(client);
     if (clientCount == 0) {
         delete clientCursor;