include context in serialization

Qrakhen.Qamp.Core/Values/Ptr.cs

@@ -1,9 +1,6 @@
 using Qrakhen.Qamp.Core.Values.Objects;
 using System.Runtime.InteropServices;
 using Qrakhen.Qamp.Core.Collections;
-using System.Diagnostics.CodeAnalysis;
-using System.Security.Cryptography;
-using System.Text;
 
 namespace Qrakhen.Qamp.Core.Values;
 
@@ -59,6 +56,8 @@ public readonly struct Ptr
             byte[] bytes;
             if (obj is Function function) {
                 bytes = function.Serialize();
+            } else if (obj is Context context) {
+                bytes = context.Function.Serialize();
             } else {
                 continue;
             }