(svn r5919) -Cleanup: use the type Date when the variable really is a date

player.h

@@ -118,7 +118,7 @@ typedef struct PlayerAiNew {
 	byte action;
 
 	int last_id; // here is stored the last id of the searched city/industry
-	uint last_vehiclecheck_date; // Used in CheckVehicle
+	Date last_vehiclecheck_date; // Used in CheckVehicle
 	Ai_SpecialVehicle special_vehicles[AI_MAX_SPECIAL_VEHICLES]; // Some vehicles have some special flags
 
 	TileIndex from_tile;