From 7d536834ce0c6a30bdf4afaa7ea413d2ac2777f0 Mon Sep 17 00:00:00 2001
From: Robin Eklind <rnd0x00@gmail.com>
Date: Mon, 2 Aug 2021 10:29:22 +0200
Subject: [PATCH] inv: add incorrect enum/off-by-one BUGFIX for UseInvItem

---
 Source/inv.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Source/inv.cpp b/Source/inv.cpp
index 340347ba4..07110af6c 100644
--- a/Source/inv.cpp
+++ b/Source/inv.cpp
@@ -2805,7 +2805,7 @@ BOOL UseInvItem(int pnum, int cii)
 		return TRUE;
 	if (stextflag != STORE_NONE)
 		return TRUE;
-	if (cii <= INVITEM_HAND_RIGHT)
+	if (cii <= INVITEM_HAND_RIGHT) // BUGFIX: should be `cii < INVITEM_INV_FIRST`, was `cii <= INVITEM_HAND_RIGHT`.
 		return FALSE;
 
 	if (cii <= INVITEM_INV_LAST) {