drop unused parameter

src/ImageSharp/Formats/Jpeg/Components/Decoder/ScanDecoder.cs

@@ -384,7 +384,6 @@ namespace SixLabors.ImageSharp.Formats.Jpeg.Components.Decoder
                     else
                     {
                         this.DecodeBlockProgressiveAC(
-                            component,
                             ref block,
                             ref acHuffmanTable,
                             ref fastACRef);
@@ -514,7 +513,6 @@ namespace SixLabors.ImageSharp.Formats.Jpeg.Components.Decoder
         }
 
         private void DecodeBlockProgressiveAC(
-            JpegComponent component,
             ref Block8x8 block,
             ref HuffmanTable acTable,
             ref short fastACRef)

tests/ImageSharp.Tests/ProfilingBenchmarks/JpegBenchmarks.cs

@@ -28,6 +28,7 @@ namespace SixLabors.ImageSharp.Tests.ProfilingBenchmarks
             TestImages.Jpeg.BenchmarkSuite.Jpeg420Exif_MidSizeYCbCr,
             TestImages.Jpeg.BenchmarkSuite.Lake_Small444YCbCr,
             TestImages.Jpeg.BenchmarkSuite.MissingFF00ProgressiveBedroom159_MidSize420YCbCr,
+            TestImages.Jpeg.BenchmarkSuite.BadRstProgressive518_Large444YCbCr,
             TestImages.Jpeg.BenchmarkSuite.ExifGetString750Transform_Huge420YCbCr,
         };
 
@@ -46,7 +47,7 @@ namespace SixLabors.ImageSharp.Tests.ProfilingBenchmarks
                 return;
             }
 
-            const int ExecutionCount = 10;
+            const int ExecutionCount = 20;
 
             if (!Vector.IsHardwareAccelerated)
             {