rar byte[] better

src/SharpCompress/Archives/Rar/RarArchive.cs

@@ -48,6 +48,20 @@ public partial class RarArchive : AbstractArchive<RarArchiveEntry, RarVolume>, I
         }
     }
 
+    public override async ValueTask DisposeAsync()
+    {
+        if (!_disposed)
+        {
+            if (UnpackV1.IsValueCreated && UnpackV1.Value is IDisposable unpackV1)
+            {
+                unpackV1.Dispose();
+            }
+
+            _disposed = true;
+            await base.DisposeAsync();
+        }
+    }
+
     protected override IEnumerable<RarArchiveEntry> LoadEntries(IEnumerable<RarVolume> volumes) =>
         RarArchiveEntryFactory.GetEntries(this, volumes, ReaderOptions);
 

src/SharpCompress/Compressors/Rar/RarStream.cs

@@ -87,10 +87,10 @@ internal class RarStream : Stream, IStreamStack
 #endif
                 ArrayPool<byte>.Shared.Return(this.tmpBuffer);
                 this.tmpBuffer = null;
+                readStream.Dispose();
             }
             isDisposed = true;
             base.Dispose(disposing);
-            readStream.Dispose();
         }
     }
 

src/SharpCompress/Compressors/Rar/UnpackV1/Unpack.cs

@@ -126,17 +126,13 @@ internal sealed partial class Unpack : BitInput, IRarUnpack
 
     private FileHeader fileHeader;
 
-    private void Init(byte[] window)
+
+    private void Init()
     {
-        if (this.window is null && window is null)
+        if (this.window is null)
         {
             this.window = ArrayPool<byte>.Shared.Rent(PackDef.MAXWINSIZE);
         }
-        else if (window is not null)
-        {
-            this.window = window;
-            externalWindow = true;
-        }
         inAddr = 0;
         UnpInitData(false);
     }
@@ -149,7 +145,7 @@ internal sealed partial class Unpack : BitInput, IRarUnpack
         this.writeStream = writeStream;
         if (!fileHeader.IsSolid)
         {
-            Init(null);
+            Init();
         }
         suspended = false;
         DoUnpack();
@@ -168,7 +164,7 @@ internal sealed partial class Unpack : BitInput, IRarUnpack
         this.writeStream = writeStream;
         if (!fileHeader.IsSolid)
         {
-            Init(null);
+            Init();
         }
         suspended = false;
         await DoUnpackAsync(cancellationToken).ConfigureAwait(false);