From 6ff1d0a2d9fdcac4a4ba1f8a34716aa90e04333d Mon Sep 17 00:00:00 2001
From: Archi <JustArchi@JustArchi.net>
Date: Sat, 17 Dec 2022 13:09:01 +0100
Subject: [PATCH] Fix possible crash during matching

---
 .../RemoteCommunication.cs                                    | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/ArchiSteamFarm.OfficialPlugins.ItemsMatcher/RemoteCommunication.cs b/ArchiSteamFarm.OfficialPlugins.ItemsMatcher/RemoteCommunication.cs
index f9f3af16d..5232d1768 100644
--- a/ArchiSteamFarm.OfficialPlugins.ItemsMatcher/RemoteCommunication.cs
+++ b/ArchiSteamFarm.OfficialPlugins.ItemsMatcher/RemoteCommunication.cs
@@ -493,6 +493,10 @@ internal sealed class RemoteCommunication : IAsyncDisposable, IDisposable {
 
 			HashSet<Asset> theirInventory = listedUser.Assets.Where(item => (!listedUser.MatchEverything || item.Tradable) && wantedSets.Contains((item.RealAppID, item.Type, item.Rarity)) && ((tradeHoldDuration.Value == 0) || !(item.Type is Asset.EType.FoilTradingCard or Asset.EType.TradingCard && CardsFarmer.SalesBlacklist.Contains(item.RealAppID)))).Select(static asset => asset.ToAsset()).ToHashSet();
 
+			if (theirInventory.Count == 0) {
+				continue;
+			}
+
 			HashSet<(uint RealAppID, Asset.EType Type, Asset.ERarity Rarity)> skippedSetsThisUser = new();
 
 			Dictionary<(uint RealAppID, Asset.EType Type, Asset.ERarity Rarity), Dictionary<ulong, uint>> theirTradableState = Trading.GetTradableInventoryState(theirInventory);