httpStatus should return false instead of error

[dylanbhughes]

If it throws an error in catch blocks, it stops the execution of further code in that catch block. So let's return false instead to make things like this very easy:

try {} // some try
catch(error) {
  if (httpStatus(error) === 'PAYMENT_REQUIRED') {
    // do thing
  } else {
    // do other thing
  }
}