LibJS: Convert Intl::NumberFormatFunction::create() to NonnullGCPtr

Userland/Libraries/LibJS/Runtime/Intl/NumberFormatFunction.cpp

@@ -12,9 +12,9 @@ namespace JS::Intl {
 
 // 15.5.2 Number Format Functions, https://tc39.es/ecma402/#sec-number-format-functions
 // 1.1.4 Number Format Functions, https://tc39.es/proposal-intl-numberformat-v3/out/numberformat/proposed.html#sec-number-format-functions
-NumberFormatFunction* NumberFormatFunction::create(Realm& realm, NumberFormat& number_format)
+NonnullGCPtr<NumberFormatFunction> NumberFormatFunction::create(Realm& realm, NumberFormat& number_format)
 {
-    return realm.heap().allocate<NumberFormatFunction>(realm, number_format, *realm.intrinsics().function_prototype());
+    return *realm.heap().allocate<NumberFormatFunction>(realm, number_format, *realm.intrinsics().function_prototype());
 }
 
 NumberFormatFunction::NumberFormatFunction(NumberFormat& number_format, Object& prototype)

Userland/Libraries/LibJS/Runtime/Intl/NumberFormatFunction.h

@@ -16,7 +16,7 @@ class NumberFormatFunction final : public NativeFunction {
     JS_OBJECT(NumberFormatFunction, NativeFunction);
 
 public:
-    static NumberFormatFunction* create(Realm&, NumberFormat&);
+    static NonnullGCPtr<NumberFormatFunction> create(Realm&, NumberFormat&);
 
     virtual ~NumberFormatFunction() override = default;
     virtual void initialize(Realm&) override;

Userland/Libraries/LibJS/Runtime/Intl/NumberFormatPrototype.cpp

@@ -52,7 +52,7 @@ JS_DEFINE_NATIVE_FUNCTION(NumberFormatPrototype::format)
     if (!number_format->bound_format()) {
         // a. Let F be a new built-in function object as defined in Number Format Functions (15.1.4).
         // b. Set F.[[NumberFormat]] to nf.
-        auto* bound_format = NumberFormatFunction::create(realm, *number_format);
+        auto bound_format = NumberFormatFunction::create(realm, *number_format);
 
         // c. Set nf.[[BoundFormat]] to F.
         number_format->set_bound_format(bound_format);