Fix days_in_transit type in CargoPacket constructor

See: https://github.com/OpenTTD/OpenTTD/issues/10707

src/cargopacket.cpp

@@ -143,7 +143,7 @@ CargoPacket::CargoPacket(StationID source, TileIndex source_xy, uint16 count, So
  * @note We have to zero memory ourselves here because we are using a 'new'
  * that, in contrary to all other pools, does not memset to 0.
  */
-CargoPacket::CargoPacket(uint16 count, byte days_in_transit, StationID source, TileIndex source_xy, TileIndex loaded_at_xy, Money feeder_share, SourceType source_type, SourceID source_id) :
+CargoPacket::CargoPacket(uint16 count, uint16 days_in_transit, StationID source, TileIndex source_xy, TileIndex loaded_at_xy, Money feeder_share, SourceType source_type, SourceID source_id) :
 		feeder_share(feeder_share),
 		count(count),
 		days_in_transit(days_in_transit),

src/cargopacket.h

@@ -84,7 +84,7 @@ public:
 
 	CargoPacket();
 	CargoPacket(StationID source, TileIndex source_xy, uint16 count, SourceType source_type, SourceID source_id);
-	CargoPacket(uint16 count, byte days_in_transit, StationID source, TileIndex source_xy, TileIndex loaded_at_xy, Money feeder_share = 0, SourceType source_type = ST_INDUSTRY, SourceID source_id = INVALID_SOURCE);
+	CargoPacket(uint16 count, uint16 days_in_transit, StationID source, TileIndex source_xy, TileIndex loaded_at_xy, Money feeder_share = 0, SourceType source_type = ST_INDUSTRY, SourceID source_id = INVALID_SOURCE);
 	~CargoPacket();
 
 	CargoPacket *Split(uint new_size);