Octathorpes have no case.

Swapped in StringComparison.Ordinal for the literal comparison against [ and ] since those are non-caseable. This is a micro-improvement, but still good practice.

Src/Newtonsoft.Json/Schema/JsonSchemaBuilder.cs

@@ -98,7 +98,7 @@ namespace Newtonsoft.Json.Schema
             {
                 string reference = schema.DeferredReference;
 
-                bool locationReference = (reference.StartsWith("#", StringComparison.OrdinalIgnoreCase));
+                bool locationReference = (reference.StartsWith("#", StringComparison.Ordinal));
                 if (locationReference)
                     reference = UnescapeReference(reference);
 
@@ -445,4 +445,4 @@ namespace Newtonsoft.Json.Schema
             return JsonSchemaConstants.JsonSchemaTypeMapping.Single(kv => kv.Value == type).Key;
         }
     }
-}
+}