John Baldwin c2fae87169 Don't call sysbeep() in sc_bell() if either duration or pitch is zero.
Otherwise sysbeep() makes an annoying clicking sound on some systems.
'kbdcontrol -b off' just sets the duration and pitch to zero, it doesn't
set the QUIET_BELL flag.

Tested by:	SorAlx <soralx@cydem.zp.ua>
PR:		misc/41772
MFC after:	1 week
2003-03-24 15:56:00 +00:00
..
2002-04-13 22:34:16 +00:00
2002-03-06 08:55:34 +00:00