From c8a191d2968fe2ed61302e35675f449317435150 Mon Sep 17 00:00:00 2001
From: jubilant-enigma <54286000+jubilant-enigma@users.noreply.github.com>
Date: Mon, 6 Dec 2021 10:18:14 -0800
Subject: [PATCH] Update src/ImageSharp/Formats/Png/PngDecoderCore.cs
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Co-authored-by: Günther Foidl <gue@korporal.at>
---
 src/ImageSharp/Formats/Png/PngDecoderCore.cs | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/ImageSharp/Formats/Png/PngDecoderCore.cs b/src/ImageSharp/Formats/Png/PngDecoderCore.cs
index 042bcb92b6..6db2328f58 100644
--- a/src/ImageSharp/Formats/Png/PngDecoderCore.cs
+++ b/src/ImageSharp/Formats/Png/PngDecoderCore.cs
@@ -115,7 +115,8 @@ namespace SixLabors.ImageSharp.Formats.Png
         /// <summary>
         /// "Exif" and two zero bytes. Used for the legacy exif parsing.
         /// </summary>
-        private static readonly byte[] ExifHeader = new byte[] { 0x45, 0x78, 0x69, 0x66, 0x00, 0x00 };
+        // This uses C# compiler's optimization to refer to the static data directly, no intermediate array allocations happen.
+        private static ReadOnlySpan<byte> ExifHeader => new byte[] { 0x45, 0x78, 0x69, 0x66, 0x00, 0x00 };
 
         /// <summary>
         /// Initializes a new instance of the <see cref="PngDecoderCore"/> class.