Unfucking Sorting Machine

- Removed spawn() from the process() func. Since the sorting machine is
CONSTANTLY running, that's a pretty fucking terrible idea, over the fact
that spawn() in process() is always terrible
- If the sorting machine no longer has an input or output node, stop all
functionality. Machine still looks active, so if there's odd behavior
with the sorting machine, get an admin to right-click on both sides of
the machine to check for an input or output node
- Running process() when there's no input or output node leads to a
fucking stream of proc crashes, I guess you can figure why