Doc: more explicit documentation for −−auto−exit

pcscd does not exit after 60 seconds but after 60 seconds of inactivity
after the release of the last PC/SC context.
If you start pcscd with −−auto−exit but do run any PC/SC application
then pcscd will NOT exit after 60 seconds.

Thanks to Matthias Apitz for the bug report.

doc/pcscd.8.in

@@ -73,7 +73,8 @@ file to detect added or removed non-USB readers (serial or PCMCIA).
 .
 .TP
 .BR \-x ", " \-\-auto\-exit
-pcscd will quit after 60 seconds of inactivity. This is used when pcscd
+pcscd will quit after 60 seconds of inactivity after the release of
+the last PC/SC context. This is used when pcscd
 os started on demand by systemd.
 .TP
 .BR \-S ", " \-\-reader\-name\-no\-serial