From 17cbe5bcbb56feb8515992ca95059e63638f48ee Mon Sep 17 00:00:00 2001
From: Vlad Zagorodniy <vladzzag@gmail.com>
Date: Thu, 5 Sep 2019 10:55:31 +0300
Subject: [PATCH] Prevent deleting non-existing support properties on the root
 window

Summary: Less likely to happen but still we need to handle this case.

Reviewers: #kwin

Subscribers: kwin

Tags: #kwin

Differential Revision: https://phabricator.kde.org/D23611
---
 composite.cpp | 1 +
 1 file changed, 1 insertion(+)

diff --git a/composite.cpp b/composite.cpp
index 1636b324cd..58d57fac70 100644
--- a/composite.cpp
+++ b/composite.cpp
@@ -508,6 +508,7 @@ void Compositor::deleteUnusedSupportProperties()
             // remove property from root window
             xcb_delete_property(con, kwinApp()->x11RootWindow(), atom);
         }
+        m_unusedSupportProperties.clear();
     }
 }