Minor improvements

Jellyfin.Drawing.Skia/SkiaEncoder.cs

@@ -308,8 +308,7 @@ namespace Jellyfin.Drawing.Skia
 
             if (requiresTransparencyHack || forceCleanBitmap)
             {
-                using (var stream = new SKFileStream(NormalizePath(path)))
-                using (var codec = SKCodec.Create(stream))
+                using (var codec = SKCodec.Create(NormalizePath(path)))
                 {
                     if (codec == null)
                     {

MediaBrowser.Common/Net/HttpResponseInfo.cs

@@ -22,7 +22,6 @@ namespace MediaBrowser.Common.Net
         }
 
 #pragma warning restore CS1591
-#pragma warning restore SA1600
 
         /// <summary>
         /// Gets or sets the type of the content.

MediaBrowser.Common/System/OperatingSystem.cs

@@ -35,7 +35,7 @@ namespace MediaBrowser.Common.System
                     case OperatingSystemId.Linux: return "Linux";
                     case OperatingSystemId.Darwin: return "macOS";
                     case OperatingSystemId.Windows: return "Windows";
-                    default: throw new Exception($"Unknown OS {Id}");
+                    default: throw new PlatformNotSupportedException($"Unknown OS {Id}");
                 }
             }
         }
@@ -53,20 +53,20 @@ namespace MediaBrowser.Common.System
                 default:
                     {
                         string osDescription = RuntimeInformation.OSDescription;
-                        if (osDescription.IndexOf("linux", StringComparison.OrdinalIgnoreCase) != -1)
+                        if (osDescription.Contains("linux", StringComparison.OrdinalIgnoreCase))
                         {
                             return OperatingSystemId.Linux;
                         }
-                        else if (osDescription.IndexOf("darwin", StringComparison.OrdinalIgnoreCase) != -1)
+                        else if (osDescription.Contains("darwin", StringComparison.OrdinalIgnoreCase))
                         {
                             return OperatingSystemId.Darwin;
                         }
-                        else if (osDescription.IndexOf("bsd", StringComparison.OrdinalIgnoreCase) != -1)
+                        else if (osDescription.Contains("bsd", StringComparison.OrdinalIgnoreCase))
                         {
                             return OperatingSystemId.BSD;
                         }
 
-                        throw new Exception($"Can't resolve OS with description: '{osDescription}'");
+                        throw new PlatformNotSupportedException($"Can't resolve OS with description: '{osDescription}'");
                     }
             }
         }