From 6b662f843a9f387c6f4f7366a5bb33f64071cdee Mon Sep 17 00:00:00 2001
From: Jason Nelson <jason@carbonmade.com>
Date: Fri, 17 Aug 2018 15:16:18 -0700
Subject: [PATCH] Eliminate string allocation in ExifReader

---
 src/ImageSharp/MetaData/Profiles/Exif/ExifReader.cs | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/ImageSharp/MetaData/Profiles/Exif/ExifReader.cs b/src/ImageSharp/MetaData/Profiles/Exif/ExifReader.cs
index 798cb93ce..72db6305d 100644
--- a/src/ImageSharp/MetaData/Profiles/Exif/ExifReader.cs
+++ b/src/ImageSharp/MetaData/Profiles/Exif/ExifReader.cs
@@ -76,7 +76,8 @@ namespace SixLabors.ImageSharp.MetaData.Profiles.Exif
         {
             var values = new List<ExifValue>();
 
-            if (this.ReadString(2) == "II")
+            // II == 0x4949
+            if (this.ReadUInt16() == 0x4949)
             {
                 this.endianness = Endianness.LittleEndian;
             }