Segmentation fault if an action is taken from the developer tools while device is locked

The program immediately segfaults if you do the following process;
1. Connect device, start `ios_webkit_debug_proxy`
2. Open debugger to an open page
3. Lock the device or allow it to lock automatically
4. Attempt to use the debugger

Running on Ubuntu 13.04 with libplist 1.10, libusbmuxd 1.0.8 and libimobiledevice 1.1.5.

I get the impression from the readme that `ios_webkit_debug_proxy` should be able to start with no devices attached, and survive disconnections and reconnections. Neither appear to be the case in the environment I'm using it in.