Spindump hangs if you use the names mode (press 'n' in visual mode) and then one quits the program

The names mode seems to work, but leads to a long hanging when trying to exit the program, at least in visual mode.

How to repeat:

Start spindump (no arguments). Press 'n' to get to names mode. Wait a while. Press 'q' to quit the program. Program does not exit but hangs.

@EgorDuplensky could help by looking at this? I don't think this is caused by your recent additions, but is related to the same functionality.

Start by running spindump with no arguments and reproducing the sequence: press n in visual mode, wait, then press q. Trace the shutdown path after names mode is entered; done means the program exits promptly instead of hanging.

Written by the indexing model from the issue text.