From f47c4bcbcffbfc4de612ccd9640ca7b38e6e8d98 Mon Sep 17 00:00:00 2001
From: Jason Nelson <jason@carbonmade.com>
Date: Thu, 10 May 2018 08:09:10 -0700
Subject: [PATCH] Don't use Linq to check if IEnumerable is empty.

---
 src/ImageSharp/ImageFrameCollection.cs | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/src/ImageSharp/ImageFrameCollection.cs b/src/ImageSharp/ImageFrameCollection.cs
index 0318a7068..cacad34a4 100644
--- a/src/ImageSharp/ImageFrameCollection.cs
+++ b/src/ImageSharp/ImageFrameCollection.cs
@@ -32,7 +32,7 @@ namespace SixLabors.ImageSharp
         internal ImageFrameCollection(Image<TPixel> parent, IEnumerable<ImageFrame<TPixel>> frames)
         {
             Guard.NotNull(parent, nameof(parent));
-            Guard.NotNullOrEmpty(frames, nameof(frames));
+            Guard.NotNull(frames, nameof(frames));
 
             this.parent = parent;
 
@@ -42,6 +42,12 @@ namespace SixLabors.ImageSharp
                 this.ValidateFrame(f);
                 this.frames.Add(f);
             }
+
+            // Ensure at least 1 frame was added to the frames collection
+            if (this.frames.Count == 0)
+            {
+                throw new ArgumentException("Must not be empty.", nameof(frames));
+            }
         }
 
         /// <summary>