Fix the timer in allies02

... still ticking even when the convoy already approached

mods/ra/maps/allies-02/allies02.lua

@@ -69,6 +69,7 @@ ConvoyOnSite = false
 SendTrucks = function()
 	if not ConvoyOnSite then
 		ConvoyOnSite = true
+		ticked = 0
 		ConvoyObjective = player.AddPrimaryObjective("Escort the convoy")
 		Media.PlaySpeechNotification(player, "ConvoyApproaching")
 		Trigger.AfterDelay(DateTime.Seconds(3), function()