FIX: only run gsub if slotNum is not 1

Signed-off-by: Paliak <91493239+Paliak@users.noreply.github.com>

Author: Paliak

src/Classes/Item.lua

@@ -1373,7 +1373,10 @@ end
 
 -- Build list of modifiers in a given slot number while applying local modifiers and adding quality
 function ItemClass:BuildModListForSlotNum(baseList, slotNum)
-	local slotName = self:GetPrimarySlot():gsub("1", tostring(slotNum))
+	local slotName = self:GetPrimarySlot()
+	if slotNum ~= 1 then
+		slotName = slotName:gsub("1", tostring(slotNum))
+	end
 	local modList = new("ModList")
 	for _, baseMod in ipairs(baseList) do
 		local mod = copyTable(baseMod)