From df0a40798b8ba15817b4f38ed38c7f19943b3717 Mon Sep 17 00:00:00 2001
From: yami <34216515+kn-yami@users.noreply.github.com>
Date: Wed, 3 Apr 2019 19:10:37 +0200
Subject: [PATCH] add a nullptr check in nsSVGUtils::PaintFrameWithEffects

---
 layout/svg/nsSVGUtils.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/layout/svg/nsSVGUtils.cpp b/layout/svg/nsSVGUtils.cpp
index 0bded21ffe..b8794a05d0 100644
--- a/layout/svg/nsSVGUtils.cpp
+++ b/layout/svg/nsSVGUtils.cpp
@@ -685,7 +685,7 @@ nsSVGUtils::PaintFrameWithEffects(nsIFrame *aFrame,
   bool isOK = effectProperties.HasNoFilterOrHasValidFilter();
   nsSVGClipPathFrame *clipPathFrame = effectProperties.GetClipPathFrame(&isOK);
   nsSVGMaskFrame *maskFrame = effectProperties.GetFirstMaskFrame(&isOK);
-  if (!isOK) {
+  if (!isOK || !maskFrame) {
     // Some resource is invalid. We shouldn't paint anything.
     return DrawResult::SUCCESS;
   }