Return null when no promise/reason is given in PromiseRejectionEvent

Source/bindings/core/v8/RejectedPromises.cpp

Index: Source/bindings/core/v8/RejectedPromises.cpp
diff --git a/Source/bindings/core/v8/RejectedPromises.cpp b/Source/bindings/core/v8/RejectedPromises.cpp
index 6e0ea3d4e5d1adfb2e8ebd0fd09344c1a24ca0fd..da8c256eb49363300cfdb8cae1a1a1e825ff8882 100644
--- a/Source/bindings/core/v8/RejectedPromises.cpp
+++ b/Source/bindings/core/v8/RejectedPromises.cpp
@@ -67,7 +67,7 @@ public:
             init.setPromise(ScriptPromise(m_scriptState, value));
             init.setReason(m_exception);
             init.setCancelable(true);
-            RefPtrWillBeRawPtr<PromiseRejectionEvent> event = PromiseRejectionEvent::create(EventTypeNames::unhandledrejection, init);
+            RefPtrWillBeRawPtr<PromiseRejectionEvent> event = PromiseRejectionEvent::create(m_scriptState, EventTypeNames::unhandledrejection, init);
             // Log to console if event was not preventDefault()'ed.
             m_shouldLogToConsole = target->dispatchEvent(event);
         }
@@ -114,7 +114,7 @@ public:
             PromiseRejectionEventInit init;
             init.setPromise(ScriptPromise(m_scriptState, value));
             init.setReason(m_exception);
-            RefPtrWillBeRawPtr<PromiseRejectionEvent> event = PromiseRejectionEvent::create(EventTypeNames::rejectionhandled, init);
+            RefPtrWillBeRawPtr<PromiseRejectionEvent> event = PromiseRejectionEvent::create(m_scriptState, EventTypeNames::rejectionhandled, init);
             m_shouldLogToConsole &= target->dispatchEvent(event);
         }