[core] Change RInvalidField::RCategory deprecation to 6.42

Author: silverweed

core/foundation/inc/ROOT/RConfig.hxx

@@ -491,6 +491,14 @@
 #define _R__DEPRECATED_640(REASON) _R_DEPRECATED_REMOVE_NOW(REASON)
 #endif
 
+/* USE AS `R__DEPRECATED(6,42, "Not threadsafe; use TFoo::Bar().")`
+   To be removed by 6.42 */
+#if ROOT_VERSION_CODE <= ROOT_VERSION(6, 41, 0)
+#define _R__DEPRECATED_642(REASON) _R__DEPRECATED_LATER(REASON)
+#else
+#define _R__DEPRECATED_642(REASON) _R_DEPRECATED_REMOVE_NOW(REASON)
+#endif
+
 /* USE AS `R__DEPRECATED(7,00, "Not threadsafe; use TFoo::Bar().")`
    To be removed by 7.00 */
 #if ROOT_VERSION_CODE < ROOT_VERSION(6,99,0)

tree/ntuple/inc/ROOT/RField.hxx

@@ -82,7 +82,7 @@ public:
       kUnknownStructure,
    };
 
-   using RCategory R__DEPRECATED(6, 40, "enum renamed to ECategory") = ECategory;
+   using RCategory R__DEPRECATED(6, 42, "enum renamed to ECategory") = ECategory;
 
 private:
    std::string fError;