wr_mon: doesn't exit well
If we execute wr_mon
and then exit from it, the shell become unusable:
- color are not back as they should be (using tinyserial com)
- vi exit with the error: vi: can't read user input
- nano exit with error: Received SIGHUP or SIGTERM
Thanks to Anders Wallin and Arnim Balzer for pointing this out!