Merge branch 'master' into trickplay

1 files changed, 4 insertions, 5 deletions

diff --git a/Emby.Server.Implementations/Library/Resolvers/Books/BookResolver.cs b/Emby.Server.Implementations/Library/Resolvers/Books/BookResolver.cs
index 042422c6f..73861ff59 100644
--- a/Emby.Server.Implementations/Library/Resolvers/Books/BookResolver.cs
+++ b/Emby.Server.Implementations/Library/Resolvers/Books/BookResolver.cs
@@ -32,9 +32,9 @@ namespace Emby.Server.Implementations.Library.Resolvers.Books
                 return GetBook(args);
             }
 
-            var extension = Path.GetExtension(args.Path);
+            var extension = Path.GetExtension(args.Path.AsSpan());
 
-            if (extension is not null && _validExtensions.Contains(extension, StringComparison.OrdinalIgnoreCase))
+            if (_validExtensions.Contains(extension, StringComparison.OrdinalIgnoreCase))
             {
                 // It's a book
                 return new Book
@@ -51,12 +51,11 @@ namespace Emby.Server.Implementations.Library.Resolvers.Books
         {
             var bookFiles = args.FileSystemChildren.Where(f =>
             {
-                var fileExtension = Path.GetExtension(f.FullName)
-                    ?? string.Empty;
+                var fileExtension = Path.GetExtension(f.FullName.AsSpan());
 
                 return _validExtensions.Contains(
                     fileExtension,
-                    StringComparer.OrdinalIgnoreCase);
+                    StringComparison.OrdinalIgnoreCase);
             }).ToList();
 
             // Don't return a Book if there is more (or less) than one document in the directory