From 515f3cbb4e716a2bf13cca5d585d886d1df4445c Mon Sep 17 00:00:00 2001
From: David Edmundson <kde@davidedmundson.co.uk>
Date: Sun, 23 Jun 2019 17:58:49 +0200
Subject: [PATCH] Avoid crash without XWayland

Summary: readX11ShadowProperty fails without an X connection

Test Plan: Tested by Kai who didn't have xwayland

Reviewers: #kwin, zzag

Reviewed By: #kwin, zzag

Subscribers: zzag, kwin

Tags: #kwin

Differential Revision: https://phabricator.kde.org/D21965
---
 shadow.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/shadow.cpp b/shadow.cpp
index 2cbabb01bd..1699b837af 100644
--- a/shadow.cpp
+++ b/shadow.cpp
@@ -124,7 +124,7 @@ Shadow *Shadow::createShadowFromWayland(Toplevel *toplevel)
 QVector< uint32_t > Shadow::readX11ShadowProperty(xcb_window_t id)
 {
     QVector<uint32_t> ret;
-    if (id != XCB_WINDOW) {
+    if (id != XCB_WINDOW_NONE) {
         Xcb::Property property(false, id, atoms->kde_net_wm_shadow, XCB_ATOM_CARDINAL, 0, 12);
         uint32_t *shadow = property.value<uint32_t*>();
         if (shadow) {