Updated code to correct build errors for Jellyfin.Extensions

src/Jellyfin.Extensions/StringBuilderExtensions.cs

@@ -2,11 +2,12 @@
 // Copyright (c) PlaceholderCompany. All rights reserved.
 // </copyright>
 
-using System.Collections.Generic;
-using System.Text;
-
 namespace Jellyfin.Extensions
 {
+    using System;
+    using System.Collections.Generic;
+    using System.Text;
+
     /// <summary>
     /// Extension methods for the <see cref="StringBuilder"/> class.
     /// </summary>
@@ -21,9 +22,11 @@ namespace Jellyfin.Extensions
         /// <returns>The updated string builder.</returns>
         public static StringBuilder AppendJoinInSingleQuotes(this StringBuilder builder, char delimiter, IReadOnlyList<string> values)
         {
+            ArgumentNullException.ThrowIfNull(values);
             var len = values.Count;
             for (var i = 0; i < len; i++)
             {
+                ArgumentNullException.ThrowIfNull(builder);
                 builder.Append('\'')
                     .Append(values[i])
                     .Append('\'')
@@ -31,6 +34,7 @@ namespace Jellyfin.Extensions
             }
 
             // remove last ,
+            ArgumentNullException.ThrowIfNull(builder);
             builder.Length--;
 
             return builder;