Fix crash when player is in a special team (R2Northstar#866)

on player team switch.

Adds a check whether player is in a default team (IMC/Milita) before calling `GetOtherTeam()`

Northstar.CustomServers/mod/scripts/vscripts/mp/_gamestate_mp.nut

@@ -1062,7 +1062,9 @@ void function OnPlayerChangedTeam( entity player )
 	if ( !player.hasConnected ) // Prevents players who just joined to trigger below code, as server always pre setups their teams
 		return
 
-	NotifyClientsOfTeamChange( player, GetOtherTeam( player.GetTeam() ), player.GetTeam() )
+	// only TEAM_IMC and TEAM_MILITIA can use function GetOtherTeam(), doesnt need to notify them when player got a special team
+	if( IsIMCOrMilitiaTeam( player.GetTeam() ) )
+		NotifyClientsOfTeamChange( player, GetOtherTeam( player.GetTeam() ), player.GetTeam() )
 
 	foreach( npc in GetNPCArray() )
 	{