Corrects item group announce flag item ID cap (#5371)

* Fixes #5370.
* Corrects the item group announce flag option being limited to uint16 for the item to display in the broadcast.
Thanks to @OriginRO!

src/map/clif.cpp

@@ -20395,7 +20395,7 @@ void clif_parse_merge_item_cancel(int fd, struct map_session_data* sd) {
  * type: ITEMOBTAIN_TYPE_BOXITEM & ITEMOBTAIN_TYPE_MONSTER_ITEM "[playername] ... [sourcename] ... [itemname]" -> MsgStringTable[1629]
  * type: ITEMOBTAIN_TYPE_NPC "[playername] ... [itemname]" -> MsgStringTable[1870]
  **/
-void clif_broadcast_obtain_special_item( const char *char_name, t_itemid nameid, unsigned short container, enum BROADCASTING_SPECIAL_ITEM_OBTAIN type ){
+void clif_broadcast_obtain_special_item( const char *char_name, t_itemid nameid, t_itemid container, enum BROADCASTING_SPECIAL_ITEM_OBTAIN type ){
 	char name[NAME_LENGTH];
 
 	if( battle_config.broadcast_hide_name ){

src/map/clif.hpp

@@ -1108,7 +1108,7 @@ void clif_notify_bindOnEquip(struct map_session_data *sd, int n);
 
 void clif_merge_item_open(struct map_session_data *sd);
 
-void clif_broadcast_obtain_special_item(const char *char_name, t_itemid nameid, unsigned short container, enum BROADCASTING_SPECIAL_ITEM_OBTAIN type);
+void clif_broadcast_obtain_special_item(const char *char_name, t_itemid nameid, t_itemid container, enum BROADCASTING_SPECIAL_ITEM_OBTAIN type);
 
 void clif_dressing_room(struct map_session_data *sd, int flag);
 void clif_navigateTo(struct map_session_data *sd, const char* mapname, uint16 x, uint16 y, uint8 flag, bool hideWindow, uint16 mob_id );