From da2bb879f27ce02083a30e10c450eda1cc943898 Mon Sep 17 00:00:00 2001
From: wolfbeast <mcwerewolf@wolfbeast.com>
Date: Sat, 23 Mar 2019 10:20:01 +0100
Subject: [PATCH] Grab caching capturing content with local variable.

---
 layout/base/nsPresShell.cpp | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/layout/base/nsPresShell.cpp b/layout/base/nsPresShell.cpp
index 969ebc9621..5dfbb8dba6 100644
--- a/layout/base/nsPresShell.cpp
+++ b/layout/base/nsPresShell.cpp
@@ -7296,11 +7296,11 @@ PresShell::HandleEvent(nsIFrame* aFrame,
     return NS_OK;
   }
 
-  nsIContent* capturingContent = ((aEvent->mClass == ePointerEventClass ||
-                                   aEvent->mClass == eWheelEventClass ||
-                                   aEvent->HasMouseEventMessage())
-                                 ? GetCapturingContent()
-                                 : nullptr);
+  nsCOMPtr<nsIContent> capturingContent = ((aEvent->mClass == ePointerEventClass ||
+                                            aEvent->mClass == eWheelEventClass ||
+                                            aEvent->HasMouseEventMessage())
+                                          ? GetCapturingContent()
+                                          : nullptr);
 
   nsCOMPtr<nsIDocument> retargetEventDoc;
   if (!aDontRetargetEvents) {