Bug 1153636: Don't assert with addEventListener("") on workers. r=smaug

dom/events/EventListenerManager.cpp

@@ -233,7 +233,7 @@ EventListenerManager::AddEventListenerInternal(
   MOZ_ASSERT(// Main thread
              (NS_IsMainThread() && aEventMessage && aTypeAtom) ||
              // non-main-thread
-             (!NS_IsMainThread() && aEventMessage && !aTypeString.IsEmpty()) ||
+             (!NS_IsMainThread() && aEventMessage) ||
              aAllEvents, "Missing type"); // all-events listener
 
   if (!aListenerHolder || mClearingListeners) {

dom/workers/test/crashtests/1153636.html

@@ -0,0 +1,5 @@
+<script>
+
+new Worker("data:text/javascript;charset=UTF-8,self.addEventListener('',function(){},false);");
+
+</script>

dom/workers/test/crashtests/crashtests.list

@@ -1,3 +1,4 @@
 load 779707.html
 load 943516.html
+load 1153636.html
 load 1158031.html