LibJS: Add PrivateEnvironment

Author: https://github.com/davidot
Commit: 13ead80ee6
Pull-request: https://github.com/SerenityOS/serenity/pull/10470
Issue: https://github.com/SerenityOS/serenity/issues/7044
Issue: https://github.com/SerenityOS/serenity/issues/8574
Reviewed-by: https://github.com/linusg

Userland/Libraries/LibWeb/DOM/EventTarget.cpp

@@ -134,7 +134,7 @@ void EventTarget::set_event_handler_attribute(FlyString const& name, HTML::Event
             dbgln("Failed to parse script in event handler attribute '{}'", name);
             return;
         }
-        auto* function = JS::ECMAScriptFunctionObject::create(target->script_execution_context()->realm().global_object(), name, program->body(), program->parameters(), program->function_length(), nullptr, JS::FunctionKind::Regular, false, false);
+        auto* function = JS::ECMAScriptFunctionObject::create(target->script_execution_context()->realm().global_object(), name, program->body(), program->parameters(), program->function_length(), nullptr, nullptr, JS::FunctionKind::Regular, false, false);
         VERIFY(function);
         listener = adopt_ref(*new DOM::EventListener(JS::make_handle(static_cast<JS::FunctionObject*>(function)), true));
     }