Invalidate held item when pasting into the stash

Makes use of that Item::isEmpty check in NewCursor to set the hand cursor when empty handed.

Source/qol/stash.cpp

@@ -88,6 +88,7 @@ void CheckStashPaste(Point cursorPosition)
 
 	if (player.HoldItem._itype == ItemType::Gold) {
 		Stash.gold += player.HoldItem._ivalue;
+		player.HoldItem._itype == ItemType::None;
 		PlaySFX(IS_GOLD);
 		Stash.dirty = true;
 		if (!IsHardwareCursor()) {
@@ -125,14 +126,14 @@ void CheckStashPaste(Point cursorPosition)
 
 	player.HoldItem.position = firstSlot + Displacement { 0, itemSize.height - 1 };
 
-	int cn = CURSOR_HAND;
 	if (stashIndex == StashStruct::EmptyCell) {
 		Stash.stashList.push_back(player.HoldItem);
+		player.HoldItem._itype == ItemType::None;
 		// stashList will have at most 10 000 items, up to 65 535 are supported with uint16_t indexes
 		stashIndex = static_cast<uint16_t>(Stash.stashList.size() - 1);
 	} else {
 		// remove item from stash grid
-		cn = SwapItem(Stash.stashList[stashIndex], player.HoldItem);
+		std::swap(Stash.stashList[stashIndex], player.HoldItem);
 		for (auto &row : Stash.GetCurrentGrid()) {
 			for (auto &itemId : row) {
 				if (itemId - 1 == stashIndex)
@@ -145,11 +146,11 @@ void CheckStashPaste(Point cursorPosition)
 
 	Stash.dirty = true;
 
-	if (cn == CURSOR_HAND && !IsHardwareCursor()) {
+	if (player.HoldItem.isEmpty() && !IsHardwareCursor()) {
 		// To make software cursors behave like hardware cursors we need to adjust the hand cursor position manually
 		SetCursorPos(cursorPosition + hotPixelOffset);
 	}
-	NewCursor(cn);
+	NewCursor(player.HoldItem);
 }
 
 void CheckStashCut(Point cursorPosition, bool automaticMove)