From 8078688d6eba8b5ff80f98443943dface307011d Mon Sep 17 00:00:00 2001
From: Dmitry Pentin <riotbr3aker@gmail.com>
Date: Sun, 11 Jul 2021 16:08:45 +0300
Subject: [PATCH] Fixed null reference in spectral converter

---
 .../Jpeg/Components/Decoder/SpectralConverter{TPixel}.cs | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/src/ImageSharp/Formats/Jpeg/Components/Decoder/SpectralConverter{TPixel}.cs b/src/ImageSharp/Formats/Jpeg/Components/Decoder/SpectralConverter{TPixel}.cs
index 1d1770aa77..6d38bde06e 100644
--- a/src/ImageSharp/Formats/Jpeg/Components/Decoder/SpectralConverter{TPixel}.cs
+++ b/src/ImageSharp/Formats/Jpeg/Components/Decoder/SpectralConverter{TPixel}.cs
@@ -105,12 +105,15 @@ namespace SixLabors.ImageSharp.Formats.Jpeg.Components.Decoder
 
         public override void Dispose()
         {
-            foreach (JpegComponentPostProcessor cpp in this.componentProcessors)
+            if (this.componentProcessors != null)
             {
-                cpp.Dispose();
+                foreach (JpegComponentPostProcessor cpp in this.componentProcessors)
+                {
+                    cpp.Dispose();
+                }
             }
 
-            this.rgbaBuffer.Dispose();
+            this.rgbaBuffer?.Dispose();
         }
 
         private void ConvertNextStride(int spectralStep)