From 2ccdc85f00af747543bfe4af33de8a143efea28c Mon Sep 17 00:00:00 2001
From: Leonardo Zide <leozide@gmail.com>
Date: Sat, 26 Dec 2020 18:16:01 -0800
Subject: [PATCH] Workaround for what looks like a Qt crash when closing the
 app with a floating preview.

---
 common/lc_mainwindow.cpp | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/common/lc_mainwindow.cpp b/common/lc_mainwindow.cpp
index bdfd7458..0bc03385 100644
--- a/common/lc_mainwindow.cpp
+++ b/common/lc_mainwindow.cpp
@@ -950,6 +950,9 @@ void lcMainWindow::closeEvent(QCloseEvent* Event)
 		Settings.endGroup();
 
 		gApplication->SaveTabLayout();
+
+		delete mPreviewWidget;
+		mPreviewWidget = nullptr;
 	}
 	else
 		Event->ignore();