mc --subshell after exit forget kill bash.

[Oleksandr Gavenko]

bash# ps
       PID    PPID    PGID     WINPID  TTY  UID    STIME COMMAND
      4056       1    4056       4056    ? 1003 09:42:56 /usr/bin/mintty
       516    4056     516       1992    8 1003 09:42:56 /usr/bin/bash
       664     516     664        304    8 1003 09:43:17 /usr/bin/ps

bash# mc --subshell
bash-3.2$ ps                         <<<< in MC >>>>
       PID    PPID    PGID     WINPID  TTY  UID    STIME COMMAND
      4056       1    4056       4056    ? 1003 09:42:56 /usr/bin/mintty
       516    4056     516       1992    8 1003 09:42:56 /usr/bin/bash
      1368     516    1368       1908    8 1003 09:43:52 /usr/bin/mc
       360    1368     360        244    0 1003 09:43:52 /usr/bin/bash
       284     360     284        628    0 1003 09:43:54 /usr/bin/ps
<<<< press F10 >>>>
bash# ps
       PID    PPID    PGID     WINPID  TTY  UID    STIME COMMAND
      4056       1    4056       4056    ? 1003 09:42:56 /usr/bin/mintty
       516    4056     516       1992    8 1003 09:42:56 /usr/bin/bash
I     360       1     360        244    0 1003 09:43:52 /usr/bin/bash
      1408     516    1408       1088    8 1003 09:44:59 /usr/bin/ps

Bashes marked with 'I' appear so many times  how many times you run and 
exit MC.

I run MC through 'mintty -e mc --subshell'.
After some count (~10-12 ???) of run and exit form MC I got error
(recorded not literary): "no free pty available".

So MC MUST kill subshell after exit.


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