Make DOMWrapperWorld::current() return a reference instead of a pointer

Source/bindings/v8/V8AbstractEventListener.cpp

Index: Source/bindings/v8/V8AbstractEventListener.cpp
diff --git a/Source/bindings/v8/V8AbstractEventListener.cpp b/Source/bindings/v8/V8AbstractEventListener.cpp
index 61720ea24cdda787b5402d75247c7e788b664d42..dc7453750b664b6b1ac0ce3c6ee9e2dab0438d29 100644
--- a/Source/bindings/v8/V8AbstractEventListener.cpp
+++ b/Source/bindings/v8/V8AbstractEventListener.cpp
@@ -43,7 +43,7 @@
 
 namespace WebCore {
 
-V8AbstractEventListener::V8AbstractEventListener(bool isAttribute, DOMWrapperWorld* world, v8::Isolate* isolate)
+V8AbstractEventListener::V8AbstractEventListener(bool isAttribute, DOMWrapperWorld& world, v8::Isolate* isolate)
     : EventListener(JSEventListenerType)
     , m_isAttribute(isAttribute)
     , m_world(world)
@@ -177,7 +177,7 @@ v8::Local<v8::Object> V8AbstractEventListener::getReceiverObject(ExecutionContex
 
 bool V8AbstractEventListener::belongsToTheCurrentWorld() const
 {
-    return m_isolate->InContext() && m_world == DOMWrapperWorld::current(m_isolate);
+    return m_isolate->InContext() && m_world == &DOMWrapperWorld::current(m_isolate);
 }
 
 void V8AbstractEventListener::setWeakCallback(const v8::WeakCallbackData<v8::Object, V8AbstractEventListener> &data)