Replace ''return'' with lambda expression ''=>''. (#50711)

Author: GeorgiPopovIT

src/Identity/Core/src/DataProtectorTokenProvider.cs

@@ -198,19 +198,13 @@ internal static class StreamExtensions
     internal static readonly Encoding DefaultEncoding = new UTF8Encoding(false, true);
 
     public static BinaryReader CreateReader(this Stream stream)
-    {
-        return new BinaryReader(stream, DefaultEncoding, true);
-    }
+        => new BinaryReader(stream, DefaultEncoding, true);
 
     public static BinaryWriter CreateWriter(this Stream stream)
-    {
-        return new BinaryWriter(stream, DefaultEncoding, true);
-    }
+        => new BinaryWriter(stream, DefaultEncoding, true);
 
     public static DateTimeOffset ReadDateTimeOffset(this BinaryReader reader)
-    {
-        return new DateTimeOffset(reader.ReadInt64(), TimeSpan.Zero);
-    }
+        => new DateTimeOffset(reader.ReadInt64(), TimeSpan.Zero);
 
     public static void Write(this BinaryWriter writer, DateTimeOffset value)
     {