[5.3] Remove the condition from updateOrInsert since it's added already

[themsaid]

public function updateOrInsert(array $attributes, array $values = [])
{
    if (! $this->where($attributes)->exists()) {
        return $this->insert(array_merge($attributes, $values));
    }

    return (bool) $this->where($attributes)->take(1)->update($values);
}

Calling $this->where($attributes)->exists() adds the conditions already, adding another where() while making an update results a query like this:

update `users` set `name` = ? where (`name` = ?) and (`name` = ?) limit 1

[taylorotwell]

Looks like test failed :)

[themsaid]

@taylorotwell Oops, sorry about that. Fixed the failing test.