From 202c48686136360a23b73a49b611a19e64f3e1b8 Mon Sep 17 00:00:00 2001
From: Edgar Chen <echen@mozilla.com>
Date: Sun, 3 Mar 2024 12:27:13 +0000
Subject: [PATCH] Bug 1881257 - Reset mSourceTopWindowContext when drag session
 end; r=NeilDeakin

Differential Revision: https://phabricator.services.mozilla.com/D203103
---
 widget/nsBaseDragService.cpp | 1 +
 1 file changed, 1 insertion(+)

diff --git a/widget/nsBaseDragService.cpp b/widget/nsBaseDragService.cpp
index 46f66ca89db2..22ed84459559 100644
--- a/widget/nsBaseDragService.cpp
+++ b/widget/nsBaseDragService.cpp
@@ -634,6 +634,7 @@ nsBaseDragService::EndDragSession(bool aDoneDrag, uint32_t aKeyModifiers) {
   mSourceDocument = nullptr;
   mSourceNode = nullptr;
   mSourceWindowContext = nullptr;
+  mSourceTopWindowContext = nullptr;
   mTriggeringPrincipal = nullptr;
   mCsp = nullptr;
   mSelection = nullptr;