json_decode can return false if we have invalid data.
In that case just assume there was nothing cached
Signed-off-by: Roeland Jago Douma <roeland@famdouma.nl>
* Cache it for a day so we will retry eventually
* Cache the status.php response as well so we will try it once a day as
well
Signed-off-by: Roeland Jago Douma <roeland@famdouma.nl>
