1 files changed, 8 insertions, 22 deletions

diff --git a/src/item_use.c b/src/item_use.c
index 16fb22d94..f9d81bfc0 100755
--- a/src/item_use.c
+++ b/src/item_use.c
@@ -8,13 +8,15 @@
 #include "coins.h"
 #include "data2.h"
 #include "event_data.h"
-#include "fieldmap.h"
 #include "event_object_movement.h"
+#include "fieldmap.h"
+#include "field_effect.h"
 #include "field_player_avatar.h"
 #include "field_screen_effect.h"
 #include "field_weather.h"
 #include "item.h"
 #include "item_menu.h"
+#include "item_use.h"
 #include "mail.h"
 #include "main.h"
 #include "menu.h"
@@ -39,29 +41,13 @@
 #include "constants/vars.h"
 #include "event_obj_lock.h"
 
-extern void unknown_ItemMenu_Confirm(u8 taskId);
-extern void sub_81C5B14(u8 taskId);
-extern void ItemUseOutOfBattle_TMHM(u8 a);
-extern void ItemUseOutOfBattle_EvolutionStone(u8 b);
-extern bool8 IsPlayerFacingSurfableFishableWater(void);
-extern bool8 sub_81221AC(void);
 extern u8 Route102_EventScript_274482[];
 extern u8 Route102_EventScript_2744C0[];
 extern u8 BattleFrontier_OutsideEast_EventScript_242CFC[];
-extern int sub_80247BC(void);
-extern struct MapHeader* mapconnection_get_mapheader(struct MapConnection *connection);
-extern void SetUpItemUseCallback(u8 taskId);
-extern void ItemUseCB_Medicine(u8, TaskFunc);
-extern void bag_menu_yes_no(u8, u8, const struct YesNoFuncTable*);
-extern void sub_81C5924(void);
-extern void sub_81C59BC(void);
-extern void sub_81AB9A8(u8);
-extern void StartEscapeRopeFieldEffect(void);
-extern u8* sub_806CF78(u16);
-extern void sub_81B89F0(void);
-extern u8 GetItemEffectType(u16);
-extern struct MapConnection *sub_8088A8C(s16, s16);
 
+extern s32 sub_80247BC(void);
+
+void SetUpItemUseCallback(u8 taskId);
 void MapPostLoadHook_UseItem(void);
 void sub_80AF6D4(void);
 void Task_CallItemUseOnFieldCallback(u8 taskId);
@@ -404,12 +390,12 @@ bool8 sub_80FD6D4(const struct MapEvents *events, s16 x, s16 y)
 
 bool8 sub_80FD730(struct MapConnection *connection, int x, int y)
 {
-    struct MapHeader *mapHeader;
+    
     u16 localX, localY;
     u32 localOffset;
     s32 localLength;
 
-    mapHeader = mapconnection_get_mapheader(connection);
+    struct MapHeader const *const mapHeader = mapconnection_get_mapheader(connection);
 
     switch (connection->direction)
     {