Fix broken EXIF test

src/ImageSharp/MetaData/Profiles/Exif/ExifProfile.cs

@@ -5,6 +5,7 @@
 
 namespace ImageSharp
 {
+    using System;
     using System.Collections.Generic;
     using System.Collections.ObjectModel;
     using System.IO;
@@ -82,10 +83,9 @@ namespace ImageSharp
                     this.values.Add(new ExifValue(value));
                 }
             }
-            else
+
-            {
+            this.data = new byte[other.data.Length];
-                this.data = other.data;
+            Buffer.BlockCopy(other.data, 0, this.data, 0, other.data.Length);
-            }
         }
 
         /// <summary>

src/ImageSharp/MetaData/Profiles/ICC/IccProfile.cs

@@ -59,7 +59,8 @@ namespace ImageSharp
             Guard.NotNull(other, nameof(other));
 
             // TODO: Do we need to copy anything else?
-            this.data = other.data;
+            this.data = new byte[other.data.Length];
+            Buffer.BlockCopy(other.data, 0, this.data, 0, other.data.Length);
         }
 
         /// <summary>