lldb script bug

Run make repro.

The command loads the script that does:

1. frame select 1
2. bt
3. frame info

Note that bt outputs a star * next to frame 1 (expected), but frame info outputs information for frame 0 (unexpected).

Then when the script finishes we run frame info that now produces information for frame 1 (expected) but inconsistent with what frame info outputs from within the script.