Code cleanup

Co-authored-by: Bond-009 <bond.009@outlook.com>

Jellyfin.Api/Controllers/UniversalAudioController.cs

@@ -186,8 +186,12 @@ public class UniversalAudioController : BaseJellyfinApiController
             var supportedHlsContainers = new[] { "ts", "mp4" };
 
             // fallback to mpegts if device reports some weird value unsupported by hls
-            var requestedSegmentContainer = Array.Exists(supportedHlsContainers, element => element == transcodingContainer) ? transcodingContainer : "ts";
-            var segmentContainer = Array.Exists(supportedHlsContainers, element => element == mediaSource.TranscodingContainer) ? mediaSource.TranscodingContainer : requestedSegmentContainer;
+            var requestedSegmentContainer = Array.Exists(
+                supportedHlsContainers, 
+                element => string.Equals(element, transcodingContainer, StringComparison.OrdinalIgnoreCase)) ? transcodingContainer : "ts";
+            var segmentContainer = Array.Exists(
+                supportedHlsContainers,
+                element => string.Equals(element, mediaSource.TranscodingContainer, StringComparison.OrdinalIgnoreCase)) ? mediaSource.TranscodingContainer : requestedSegmentContainer;
             var dynamicHlsRequestDto = new HlsAudioRequestDto
             {
                 Id = itemId,