From 23193d01ccfd04179b88da5165e404aee5d2e5be Mon Sep 17 00:00:00 2001
From: Olli Pettay <Olli.Pettay@helsinki.fi>
Date: Thu, 2 Nov 2017 10:40:38 +0200
Subject: [PATCH] Bug 1412275, ensure we have still the executor before trying
 to continue parsing, r=hsivonen

---
 parser/html/nsHtml5Parser.cpp | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/parser/html/nsHtml5Parser.cpp b/parser/html/nsHtml5Parser.cpp
index 2613eded3538..8210f1fd1f24 100644
--- a/parser/html/nsHtml5Parser.cpp
+++ b/parser/html/nsHtml5Parser.cpp
@@ -153,7 +153,7 @@ nsHtml5Parser::UnblockParser()
   if (MOZ_LIKELY(mBlocked > 0)) {
     mBlocked--;
   }
-  if (MOZ_LIKELY(mBlocked == 0)) {
+  if (MOZ_LIKELY(mBlocked == 0) && mExecutor) {
     mExecutor->ContinueInterruptedParsingAsync();
   }
 }
@@ -161,7 +161,9 @@ nsHtml5Parser::UnblockParser()
 NS_IMETHODIMP_(void)
 nsHtml5Parser::ContinueInterruptedParsingAsync()
 {
-  mExecutor->ContinueInterruptedParsingAsync();
+  if (mExecutor) {
+    mExecutor->ContinueInterruptedParsingAsync();
+  }
 }
 
 NS_IMETHODIMP_(bool)