From b51bf27f132adb50de81faaf656885729eaf2389 Mon Sep 17 00:00:00 2001
From: Andreas Farre <farre@mozilla.com>
Date: Tue, 23 Jan 2024 08:04:51 +0000
Subject: [PATCH] Bug 1875040 - Use GetExtantDocument instead of GetDocument.
 r=smaug

Avoids accidentally creating a document when checking if a document's
presentation can be saved.

Differential Revision: https://phabricator.services.mozilla.com/D198781
---
 docshell/base/nsDocShell.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/docshell/base/nsDocShell.cpp b/docshell/base/nsDocShell.cpp
index 0b8212fbf3f8..c77e96438d25 100644
--- a/docshell/base/nsDocShell.cpp
+++ b/docshell/base/nsDocShell.cpp
@@ -9436,7 +9436,7 @@ nsresult nsDocShell::InternalLoad(nsDocShellLoadState* aLoadState,
   // separate check for SHIP so that we know if there are ongoing requests
   // before calling Stop() below.
   if (mozilla::SessionHistoryInParent()) {
-    Document* document = GetDocument();
+    Document* document = GetExtantDocument();
     uint32_t flags = 0;
     if (document && !document->CanSavePresentation(nullptr, flags, true)) {
       // This forces some flags into the WindowGlobalParent's mBFCacheStatus,