Fixed merging errors

src/ImageSharp/Formats/Jpeg/Components/Decoder/ColorConverters/JpegColorConverterBase.cs

@@ -206,12 +206,12 @@ namespace SixLabors.ImageSharp.Formats.Jpeg.Components.Decoder.ColorConverters
 
                 this.ComponentCount = componentBuffers.Count;
 
-                this.Component0 = componentBuffers[0].GetRowSpan(row);
+                this.Component0 = componentBuffers[0].DangerousGetRowSpan(row);
 
                 // In case of grayscale, Component1 and Component2 point to Component0 memory area
-                this.Component1 = this.ComponentCount > 1 ? componentBuffers[1].GetRowSpan(row) : this.Component0;
-                this.Component2 = this.ComponentCount > 2 ? componentBuffers[2].GetRowSpan(row) : this.Component0;
-                this.Component3 = this.ComponentCount > 3 ? componentBuffers[3].GetRowSpan(row) : Span<float>.Empty;
+                this.Component1 = this.ComponentCount > 1 ? componentBuffers[1].DangerousGetRowSpan(row) : this.Component0;
+                this.Component2 = this.ComponentCount > 2 ? componentBuffers[2].DangerousGetRowSpan(row) : this.Component0;
+                this.Component3 = this.ComponentCount > 3 ? componentBuffers[3].DangerousGetRowSpan(row) : Span<float>.Empty;
             }
 
             /// <summary>
@@ -223,12 +223,14 @@ namespace SixLabors.ImageSharp.Formats.Jpeg.Components.Decoder.ColorConverters
             {
                 DebugGuard.MustBeGreaterThan(processors.Count, 0, nameof(processors));
 
-                this.Component0 = componentBuffers[0].DangerousGetRowSpan(row);
+                this.ComponentCount = processors.Count;
+
+                this.Component0 = processors[0].GetColorBufferRowSpan(row);
 
                 // In case of grayscale, Component1 and Component2 point to Component0 memory area
-                this.Component1 = this.ComponentCount > 1 ? componentBuffers[1].DangerousGetRowSpan(row) : this.Component0;
-                this.Component2 = this.ComponentCount > 2 ? componentBuffers[2].DangerousGetRowSpan(row) : this.Component0;
-                this.Component3 = this.ComponentCount > 3 ? componentBuffers[3].DangerousGetRowSpan(row) : Span<float>.Empty;
+                this.Component1 = this.ComponentCount > 1 ? processors[1].GetColorBufferRowSpan(row) : this.Component0;
+                this.Component2 = this.ComponentCount > 2 ? processors[2].GetColorBufferRowSpan(row) : this.Component0;
+                this.Component3 = this.ComponentCount > 3 ? processors[3].GetColorBufferRowSpan(row) : Span<float>.Empty;
             }
 
             internal ComponentValues(