From d57be742ff5b9e94fb923f72f481090cf4896a3d Mon Sep 17 00:00:00 2001
From: Vlad Zahorodnii <vlad.zahorodnii@kde.org>
Date: Tue, 17 Jan 2023 13:00:43 +0200
Subject: [PATCH] effects/diminactive: Ensure that m_activeWindow is always
 reset

As the FIXME comment says, a window can be deleted without prior
windowClosed signal.

BUG: 442222
---
 src/effects/diminactive/diminactive.cpp | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/effects/diminactive/diminactive.cpp b/src/effects/diminactive/diminactive.cpp
index 88d27324d0..f89b4fa44b 100644
--- a/src/effects/diminactive/diminactive.cpp
+++ b/src/effects/diminactive/diminactive.cpp
@@ -369,6 +369,9 @@ void DimInactiveEffect::windowDeleted(EffectWindow *w)
     // gets destroyed immediately. So, we have to remove active transitions
     // for that window here, otherwise we'll crash in postPaintScreen.
     m_transitions.remove(w);
+    if (m_activeWindow == w) {
+        m_activeWindow = nullptr;
+    }
 }
 
 void DimInactiveEffect::activeFullScreenEffectChanged()