Fixed the color of a player row on the VoIP panel not being initialized properly, which sometimes caused the client to crash.
This addresses https://zandronum.com/tracker/view.php?id=4220 where sometimes, the colour of the name of a player on the VoIP panel appeared glitched because VOIPPanel::VOIPPanelRow::color
wasn't initialized properly. This caused the client to crash in some cases.