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/DOM/AbortSignal.cpp

@@ -14,7 +14,7 @@ namespace Web::DOM {
 
 JS::NonnullGCPtr<AbortSignal> AbortSignal::construct_impl(JS::Realm& realm)
 {
-    return *realm.heap().allocate<AbortSignal>(realm, realm);
+    return realm.heap().allocate<AbortSignal>(realm, realm);
 }
 
 AbortSignal::AbortSignal(JS::Realm& realm)