Update StreamExtensions.cs

src/ImageSharp/Common/Extensions/StreamExtensions.cs

@@ -48,11 +48,13 @@ namespace SixLabors.ImageSharp
 
             if (stream.CanSeek)
             {
-                stream.Seek(count, SeekOrigin.Current); // Position += count;
+                stream.Seek(count, SeekOrigin.Current);
                 return;
             }
 
-            var buffer = ArrayPool<byte>.Shared.Rent(count);
+            byte[] buffer = ArrayPool<byte>.Shared.Rent(count);
+            try
+            {
                 while (count > 0)
                 {
                     int bytesRead = stream.Read(buffer, 0, count);
@@ -63,9 +65,12 @@ namespace SixLabors.ImageSharp
 
                     count -= bytesRead;
                 }
-
+            }
+            finally
+            {
                 ArrayPool<byte>.Shared.Return(buffer);
             }
+        }
 
         public static void Read(this Stream stream, IManagedByteBuffer buffer)
             => stream.Read(buffer.Array, 0, buffer.Length());