Quick fixes for shop fighter shield and retro shop arrow

itemdatatables.asm

@@ -89,7 +89,7 @@ endmacro
 %ReceiptProps($40, -4, 0, $34, $F360, $9C, skip, skip) ; 40 - 100 rupees
 %ReceiptProps($41, -4, 0, $35, $F360, $CE, skip, skip) ; 41 - 50 rupees
 %ReceiptProps($42, -2, 4, $31, $F372, $FF, skip, skip) ; 42 - Heart
-%ReceiptProps($43, -2, 4, $33, $F376, $01, skip, skip) ; 43 - Arrow
+%ReceiptProps($43, -2, 4, $33, $F376, $01, single_arrow, skip) ; 43 - Arrow
 %ReceiptProps($44, -4, 0, $02, $F376, $0A, skip, skip) ; 44 - 10 arrows
 %ReceiptProps($45, -2, 4, $32, $F373, $FF, skip, skip) ; 45 - Small magic
 %ReceiptProps($46, -4, 0, $36, $F360, $FF, skip, skip) ; 46 - 300 rupees

newitems.asm

@@ -202,18 +202,24 @@ ItemBehavior:
 
         .fighter_shield
         SEP #$10
-        LDX.b #$01
-        JSR .increment_shield
+        LDA.w ShopPurchaseFlag : BNE ..shop_shield
+                -
+                LDX.b #$01
+                JSR .increment_shield
+                RTS
+        ..shop_shield
+        TYX
+        LDA.l InventoryTable_properties,X : BIT.b #$02 : BNE -
         RTS
 
         .red_shield
         SEP #$10
-        LDA.w ShopPurchaseFlag : BNE .shop_shield
+        LDA.w ShopPurchaseFlag : BNE ..shop_shield
                 -
                 LDX.b #$02
                 JSR .increment_shield
                 RTS
-        .shop_shield
+        ..shop_shield
         TYX
         LDA.l InventoryTable_properties,X : BIT.b #$02 : BNE -
         RTS
@@ -411,6 +417,10 @@ ItemBehavior:
         +
         RTS
 
+        .single_arrow
+        INC.w UpdateHUD
+        RTS
+
         .rupoor
         REP #$20 : LDA.l CurrentRupees : !SUB RupoorDeduction : STA.l CurrentRupees : SEP #$20 ; Take 1 rupee
         RTS