Backport pull request #15468 from jellyfin/release-10.11.z

Check if target exists before trying to follow it

Original-merge: 5878b1ffc5

Merged-by: joshuaboniface <joshua@boniface.me>

Backported-by: Bond_009 <bond.009@outlook.com>

MediaBrowser.Controller/IO/FileSystemHelper.cs

@@ -92,6 +92,11 @@ public static class FileSystemHelper
             return null;
         }
 
+        if (!targetInfo.Exists)
+        {
+            return targetInfo;
+        }
+
         var currentPath = targetInfo.FullName;
         var visited = new HashSet<string>(StringComparer.Ordinal) { linkPath, currentPath };
         while (File.ResolveLinkTarget(currentPath, returnFinalTarget: false) is FileInfo linkInfo)