Fix: corrected comment about <shoutcast-mount>

When unset no default is used but the feature is disabled.
(The Shoutcast listen socket is not opened at all.)

Thanks to Jeremiah Rogers for pointing out.

conf/icecast.xml.in

@@ -44,8 +44,7 @@
     </authentication>
 
     <!-- set the mountpoint for a shoutcast source to use, the default if not
-         specified is /stream but you can change it here if an alternative is
-         wanted or an extension is required
+         specified is to have none.
     <shoutcast-mount>/live.nsv</shoutcast-mount>
     -->