More small optimizations

Emby.Server.Implementations/Dto/DtoService.cs

@@ -722,8 +722,7 @@ namespace Emby.Server.Implementations.Dto
 
                 // Prevent implicitly captured closure
                 var currentItem = item;
-                foreach (var image in currentItem.ImageInfos.Where(i => !currentItem.AllowsMultipleImages(i.Type))
-                    .ToList())
+                foreach (var image in currentItem.ImageInfos.Where(i => !currentItem.AllowsMultipleImages(i.Type)))
                 {
                     if (options.GetImageLimit(image.Type) > 0)
                     {
@@ -735,7 +734,7 @@ namespace Emby.Server.Implementations.Dto
                         }
 
                         var hash = image.Hash;
-                        if (hash != null && hash.Length > 0)
+                        if (!string.IsNullOrEmpty(hash))
                         {
                             dto.ImageHashes[tag] = image.Hash;
                         }

Emby.Server.Implementations/Library/LibraryManager.cs

@@ -1831,10 +1831,11 @@ namespace Emby.Server.Implementations.Library
             }
 
             var outdated = item.ImageInfos
-                .Where(i => (i.Width == 0 || i.Height == 0 || string.IsNullOrEmpty(i.Hash)))
+                .Where(i => (i.IsLocalFile && (i.Width == 0 || i.Height == 0 || string.IsNullOrEmpty(i.Hash))))
                 .ToList();
             if (outdated.Count == 0)
             {
+                RegisterItem(item);
                 return;
             }
 

Jellyfin.Drawing.Skia/SkiaEncoder.cs

@@ -1,10 +1,7 @@
 using System;
 using System.Collections.Generic;
-using System.Diagnostics.CodeAnalysis;
 using System.Globalization;
 using System.IO;
-using System.Linq;
-using System.Threading.Tasks;
 using BlurHashSharp.SkiaSharp;
 using MediaBrowser.Common.Configuration;
 using MediaBrowser.Controller.Drawing;
@@ -237,7 +234,6 @@ namespace Jellyfin.Drawing.Skia
         /// <exception cref="ArgumentNullException">The path is null.</exception>
         /// <exception cref="FileNotFoundException">The path is not valid.</exception>
         /// <exception cref="SkiaCodecException">The file at the specified path could not be used to generate a codec.</exception>
-        [SuppressMessage("Microsoft.Performance", "CA1814:PreferJaggedArraysOverMultidimensional")]
         public string GetImageHash(string path)
         {
             if (path == null)
@@ -250,7 +246,7 @@ namespace Jellyfin.Drawing.Skia
                 throw new FileNotFoundException("File not found", path);
             }
 
-            return BlurHashSharp.SkiaSharp.BlurHashEncoder.Encode(4, 4, path);
+            return BlurHashEncoder.Encode(4, 4, path);
         }
 
         private static bool HasDiacritics(string text)