From 41b5ef3061a3507c26e7c846a9e27bae2b3b9f18 Mon Sep 17 00:00:00 2001
From: Jason Nelson <jason@carbonmade.com>
Date: Tue, 23 Oct 2018 17:57:30 -0700
Subject: [PATCH] Eliminate an allocation when cloning a valid ExifProfile

---
 src/ImageSharp/MetaData/Profiles/Exif/ExifProfile.cs | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/src/ImageSharp/MetaData/Profiles/Exif/ExifProfile.cs b/src/ImageSharp/MetaData/Profiles/Exif/ExifProfile.cs
index 32c1796d4c..6890cc5358 100644
--- a/src/ImageSharp/MetaData/Profiles/Exif/ExifProfile.cs
+++ b/src/ImageSharp/MetaData/Profiles/Exif/ExifProfile.cs
@@ -63,7 +63,16 @@ namespace SixLabors.ImageSharp.MetaData.Profiles.Exif
             this.Parts = other.Parts;
             this.thumbnailLength = other.thumbnailLength;
             this.thumbnailOffset = other.thumbnailOffset;
-            this.InvalidTags = new List<ExifTag>(other.InvalidTags);
+
+            if (other.InvalidTags.Count > 0)
+            {
+                this.InvalidTags = new List<ExifTag>(other.InvalidTags);
+            }
+            else
+            {
+                this.InvalidTags = Array.Empty<ExifTag>();
+            }
+
             if (other.values != null)
             {
                 this.values = new List<ExifValue>(other.Values.Count);