LibJS: Convert Heap::allocate{,_without_realm}() to NonnullGCPtr

Author: https://github.com/linusg
Commit: 22089436ed
Pull-request: https://github.com/SerenityOS/serenity/pull/16498
Reviewed-by: https://github.com/trflynn89 ✅

Userland/Libraries/LibWeb/Geometry/DOMRectReadOnly.cpp

@@ -11,7 +11,7 @@ namespace Web::Geometry {
 
 JS::NonnullGCPtr<DOMRectReadOnly> DOMRectReadOnly::construct_impl(JS::Realm& realm, double x, double y, double width, double height)
 {
-    return *realm.heap().allocate<DOMRectReadOnly>(realm, realm, x, y, width, height);
+    return realm.heap().allocate<DOMRectReadOnly>(realm, realm, x, y, width, height);
 }
 
 DOMRectReadOnly::DOMRectReadOnly(JS::Realm& realm, double x, double y, double width, double height)