I unbolted my cruise control, to check my clutch master, and I noticed what looks like a vacuum line coming from a hole in the fender that isn't connected to anything. I've been going through my FSM but can't figure out what it is or where it goes. It looks like it's routed behind the brake booster, but it's not connected to anything. Does anyone know what it is, or where it connects to, if anywhere? Thanks for any help.

 

A picture would his in a situation like this.