Fix crash when sandboxed

When installed with Xcode onto a physical device, the app would instantly crash when sandboxed. It would be nice if this was fixed, as it would make it easier to test basic stuff like the UI and support for not yet jailbroken iOS versions.

This isn't as crucial as getting apt and working, but it may be worth considering a fix.

Crash Log:
```
error 10:09:42.463385 -0500 SpringBoard Unable to register for exec notifications: No such process
error 10:09:42.463622 -0500 SpringBoard Unable to get short BSD proc info for 1932: No such process
error 10:09:42.463773 -0500 SpringBoard Unable to get proc info for 1932: No such process
error 10:09:42.463898 -0500 SpringBoard Unable to obtain a task name port right for pid 1932: (os/kern) failure (0x5)
error 10:09:42.464089 -0500 SpringBoard Unable to get short BSD proc info for 1932: No such process
error 10:09:42.464288 -0500 SpringBoard Unable to obtain a process handle for
error 10:09:42.932599 -0500 backboardd Unable to bootstrap_look_up port with name .gsEvents: unknown error code (1102)
error 10:09:42.940364 -0500 backboardd Unable to bootstrap_look_up port with name .gsEvents: unknown error code (1102)
```