Update Emby.Server.Implementations/ApplicationHost.cs

Co-authored-by: Cody Robibero <cody@robibe.ro>

Emby.Server.Implementations/ApplicationHost.cs

@@ -1080,7 +1080,7 @@ namespace Emby.Server.Implementations
                     }
                     else
                     {
-                        metafile = dir.Split(new char[] { Path.DirectorySeparatorChar }, StringSplitOptions.RemoveEmptyEntries).Last();
+                        metafile = dir.Split(new[] { Path.DirectorySeparatorChar }, StringSplitOptions.RemoveEmptyEntries)[^1];
                         // Add it under the path name and version 0.0.0.1.
                         versions.Add((new Version("0.0.0.1"), metafile, dir));
                     }