1 files changed, 9 insertions, 5 deletions
diff --git a/dom/workers/ScriptLoader.cpp b/dom/workers/ScriptLoader.cpp
index 46545e737..56b18441e 100644
--- a/dom/workers/ScriptLoader.cpp
+++ b/dom/workers/ScriptLoader.cpp
@@ -2118,12 +2118,16 @@ LoadAllScripts(WorkerPrivate* aWorkerPrivate,
   aWorkerPrivate->AssertIsOnWorkerThread();
   NS_ASSERTION(!aLoadInfos.IsEmpty(), "Bad arguments!");
 
-  AutoSyncLoopHolder syncLoop(aWorkerPrivate);
+  AutoSyncLoopHolder syncLoop(aWorkerPrivate, Terminating);
+  nsCOMPtr<nsIEventTarget> syncLoopTarget = syncLoop.GetEventTarget();
+  if (!syncLoopTarget) {
+    aRv.Throw(NS_ERROR_DOM_INVALID_STATE_ERR);
+    return;
+  }
 
   RefPtr<ScriptLoaderRunnable> loader =
-    new ScriptLoaderRunnable(aWorkerPrivate, syncLoop.EventTarget(),
-                             aLoadInfos, aIsMainScript, aWorkerScriptType,
-                             aRv);
+    new ScriptLoaderRunnable(aWorkerPrivate, syncLoopTarget, aLoadInfos,
+                             aIsMainScript, aWorkerScriptType, aRv);
 
   NS_ASSERTION(aLoadInfos.IsEmpty(), "Should have swapped!");
 
@@ -2184,7 +2188,7 @@ ChannelFromScriptURLWorkerThread(JSContext* aCx,
     new ChannelGetterRunnable(aParent, aScriptURL, aChannel);
 
   ErrorResult rv;
-  getter->Dispatch(rv);
+  getter->Dispatch(Terminating, rv);
   if (rv.Failed()) {
     NS_ERROR("Failed to dispatch!");
     return rv.StealNSResult();