Wake up less often when not connected to the server When mcabber isn't connected to a server, it sleeps for very short periods, which isn't very efficient. This patch removes the safe_usleep() calls. Problem reported by Peter Somogyi.

[Desktop Entry]
Encoding=UTF-8
Type=Application
Name=MCabber
GenericName=Jabber IM Client
Comment=Console Jabber Client
Exec=mcabber
Terminal=true
Categories=ConsoleOnly;System;Network;InstantMessaging;Chat;