From 7564818c79cf67d0dcf866579d5b74647b96dae6 Mon Sep 17 00:00:00 2001
From: Moonchild <moonchild@palemoon.org>
Date: Sat, 12 Sep 2020 20:20:02 +0200
Subject: Issue #1650 - Add null check.

There are situations where nsCSSClipPathinstance->CreateClipPath(dt)
returns null. We need to check for this before trying to use its
functions. If there is no clip path, then always return "no hit".
---
 layout/svg/nsCSSClipPathInstance.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/layout/svg/nsCSSClipPathInstance.cpp b/layout/svg/nsCSSClipPathInstance.cpp
index 01f7de248..e923eaa0e 100644
--- a/layout/svg/nsCSSClipPathInstance.cpp
+++ b/layout/svg/nsCSSClipPathInstance.cpp
@@ -59,7 +59,7 @@ nsCSSClipPathInstance::HitTestBasicShapeClip(nsIFrame* aFrame,
   RefPtr<Path> path = instance.CreateClipPath(drawTarget);
   float pixelRatio = float(nsPresContext::AppUnitsPerCSSPixel()) /
                      aFrame->PresContext()->AppUnitsPerDevPixel();
-  return path->ContainsPoint(ToPoint(aPoint) * pixelRatio, Matrix());
+  return path ? path->ContainsPoint(ToPoint(aPoint) * pixelRatio, Matrix()) : false;
 }
 
 already_AddRefed<Path>
-- 
cgit v1.2.3