From c72afc3c8c3f1df53d241c45dd21aa1b2a6c8e50 Mon Sep 17 00:00:00 2001
From: wolfbeast <mcwerewolf@wolfbeast.com>
Date: Fri, 17 May 2019 01:57:45 +0000
Subject: Add nullcheck.

This resolves #1088
---
 dom/xslt/base/txURIUtils.cpp | 4 ++++
 1 file changed, 4 insertions(+)

(limited to 'dom/xslt')

diff --git a/dom/xslt/base/txURIUtils.cpp b/dom/xslt/base/txURIUtils.cpp
index 3f3556f80..bce2f8d0f 100644
--- a/dom/xslt/base/txURIUtils.cpp
+++ b/dom/xslt/base/txURIUtils.cpp
@@ -45,6 +45,10 @@ void URIUtils::resolveHref(const nsAString& href, const nsAString& base,
 void
 URIUtils::ResetWithSource(nsIDocument *aNewDoc, nsINode *aSourceNode)
 {
+	if (!aSourceNode) {
+		return;
+	}
+
     nsCOMPtr<nsIDocument> sourceDoc = aSourceNode->OwnerDoc();
     nsIPrincipal* sourcePrincipal = sourceDoc->NodePrincipal();
 
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