This fixes#5089
When garbage collection is running on a paused async function that
includes destructuring assignments of strings, the string can be a
direct string, and not an object, which cannot be marked as visited, as
it does not have a visited flag.
JerryScript-DCO-1.0-Signed-off-by: Máté Tokodi mate.tokodi@szteszoftver.hu
Máté Tokodi