LibWeb: Make factory method of URL::URLSearchParamsIterator fallible

Userland/Libraries/LibWeb/URL/URLSearchParamsIterator.cpp

@@ -23,9 +23,9 @@ void Intrinsics::create_web_prototype_and_constructor<URLSearchParamsIteratorPro
 
 namespace Web::URL {
 
-JS::NonnullGCPtr<URLSearchParamsIterator> URLSearchParamsIterator::create(URLSearchParams const& url_search_params, JS::Object::PropertyKind iteration_kind)
+WebIDL::ExceptionOr<JS::NonnullGCPtr<URLSearchParamsIterator>> URLSearchParamsIterator::create(URLSearchParams const& url_search_params, JS::Object::PropertyKind iteration_kind)
 {
-    return url_search_params.heap().allocate<URLSearchParamsIterator>(url_search_params.realm(), url_search_params, iteration_kind).release_allocated_value_but_fixme_should_propagate_errors();
+    return MUST_OR_THROW_OOM(url_search_params.heap().allocate<URLSearchParamsIterator>(url_search_params.realm(), url_search_params, iteration_kind));
 }
 
 URLSearchParamsIterator::URLSearchParamsIterator(URLSearchParams const& url_search_params, JS::Object::PropertyKind iteration_kind)

Userland/Libraries/LibWeb/URL/URLSearchParamsIterator.h

@@ -15,7 +15,7 @@ class URLSearchParamsIterator : public Bindings::PlatformObject {
     WEB_PLATFORM_OBJECT(URLSearchParamsIterator, Bindings::PlatformObject);
 
 public:
-    static JS::NonnullGCPtr<URLSearchParamsIterator> create(URLSearchParams const&, JS::Object::PropertyKind iteration_kind);
+    static WebIDL::ExceptionOr<JS::NonnullGCPtr<URLSearchParamsIterator>> create(URLSearchParams const&, JS::Object::PropertyKind iteration_kind);
 
     virtual ~URLSearchParamsIterator() override;