From cbe348555b91fadd11db0f0d60fc1e75eef1dd35 Mon Sep 17 00:00:00 2001
From: BruceChen <MrChen131217@gmail.com>
Date: Mon, 25 Jul 2022 17:08:59 +0800
Subject: [PATCH] Fix bug: drop single item cause exception

---
 MinecraftClient/McClient.cs | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/MinecraftClient/McClient.cs b/MinecraftClient/McClient.cs
index 2f517021..3b9e8005 100644
--- a/MinecraftClient/McClient.cs
+++ b/MinecraftClient/McClient.cs
@@ -1537,12 +1537,17 @@ namespace MinecraftClient
                         break;
                     case WindowActionType.DropItem:
                         if (inventory.Items.ContainsKey(slotId))
+                        {
                             inventory.Items[slotId].Count--;
+                            changedSlots.Add(new Tuple<short, Item>((short)slotId, inventory.Items[slotId]));
+                        }
 
                         if (inventory.Items[slotId].Count <= 0)
+                        {
                             inventory.Items.Remove(slotId);
+                            changedSlots.Add(new Tuple<short, Item>((short)slotId, null));
+                        }
 
-                        changedSlots.Add(new Tuple<short, Item>((short)slotId, inventory.Items[slotId]));
                         break;
                     case WindowActionType.DropItemStack:
                         inventory.Items.Remove(slotId);