Butterfly::create() does not handle allocation failures.

[Michael Saboff]

Butterfly::create calls Butterfly:: tryCreate(), but always expects the allocation to succeed.

inline Butterfly* Butterfly::create(VM& vm, JSObject* intendedOwner, size_t preCapacity, size_t propertyCapacity, bool hasIndexingHeader, const IndexingHeader& indexingHeader, size_t indexingPayloadSizeInBytes)
{
    Butterfly* result = tryCreate(vm, intendedOwner, preCapacity, propertyCapacity, hasIndexingHeader, indexingHeader, indexingPayloadSizeInBytes);

    RELEASE_ASSERT(result);
    return result;
}

[Radar WebKit Bug Importer]

<rdar://problem/79590714>