Make IccLocalizedString a struct

src/ImageSharp/MetaData/Profiles/ICC/Various/IccLocalizedString.cs

@@ -7,12 +7,12 @@ using System.Globalization;
 namespace SixLabors.ImageSharp.MetaData.Profiles.Icc
 {
     /// <summary>
-    /// A string with a specific locale
+    /// A string with a specific locale.
     /// </summary>
-    internal sealed class IccLocalizedString : IEquatable<IccLocalizedString>
+    internal readonly struct IccLocalizedString : IEquatable<IccLocalizedString>
     {
         /// <summary>
-        /// Initializes a new instance of the <see cref="IccLocalizedString"/> class.
+        /// Initializes a new instance of the <see cref="IccLocalizedString"/> struct.
         /// The culture will be <see cref="CultureInfo.CurrentCulture"/>
         /// </summary>
         /// <param name="text">The text value of this string</param>
@@ -22,7 +22,7 @@ namespace SixLabors.ImageSharp.MetaData.Profiles.Icc
         }
 
         /// <summary>
-        /// Initializes a new instance of the <see cref="IccLocalizedString"/> class.
+        /// Initializes a new instance of the <see cref="IccLocalizedString"/> struct.
         /// The culture will be <see cref="CultureInfo.CurrentCulture"/>
         /// </summary>
         /// <param name="culture">The culture of this string</param>
@@ -37,26 +37,19 @@ namespace SixLabors.ImageSharp.MetaData.Profiles.Icc
         }
 
         /// <summary>
-        /// Gets the actual text value
+        /// Gets the text value.
         /// </summary>
         public string Text { get; }
 
         /// <summary>
-        /// Gets the culture of the text
+        /// Gets the culture of text.
         /// </summary>
         public CultureInfo Culture { get; }
 
         /// <inheritdoc />
-        public bool Equals(IccLocalizedString other)
-        {
-            if (ReferenceEquals(this, other))
-            {
-                return true;
-            }
-
-            return this.Culture.Equals(other.Culture)
-                && this.Text == other.Text;
-        }
+        public bool Equals(IccLocalizedString other) =>
+            this.Culture.Equals(other.Culture) &&
+            this.Text == other.Text;
 
         /// <inheritdoc />
         public override string ToString()