From 27f4d0b5a50e6808ae7de14e1812d775d0754258 Mon Sep 17 00:00:00 2001
From: Moonchild <moonchild@palemoon.org>
Date: Wed, 1 Jul 2020 21:12:16 +0000
Subject: [PATCH] Issue #618 - Check for failed instantiation when starting to
 fetch dependencies

If instantiation has failed, then also fail the load and don't fetch imports.
Ref BZ: 1358882
---
 dom/script/ScriptLoader.cpp | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/dom/script/ScriptLoader.cpp b/dom/script/ScriptLoader.cpp
index adc046b7c4..ffbe37f281 100644
--- a/dom/script/ScriptLoader.cpp
+++ b/dom/script/ScriptLoader.cpp
@@ -721,6 +721,12 @@ ScriptLoader::StartFetchingModuleDependencies(ModuleLoadRequest* aRequest)
 {
   MOZ_ASSERT(aRequest->mModuleScript);
   MOZ_ASSERT(!aRequest->IsReadyToRun());
+
+  if (aRequest->mModuleScript->InstantiationFailed()) {
+    aRequest->LoadFailed();
+    return;
+  }
+
   aRequest->mProgress = ModuleLoadRequest::Progress::FetchingImports;
 
   nsCOMArray<nsIURI> urls;