ifdef for EE version

diff --cc src/inc/corinfo.h
index 35e855b,35e855b..ac4c027
--- 1/src/inc/corinfo.h
--- 2/src/inc/corinfo.h
+++ b/src/inc/corinfo.h
@@@ -1707,7 -1707,7 +1707,9 @@@ enum CORINFO_FIELD_ACCESSO
      CORINFO_FIELD_STATIC_GENERICS_STATIC_HELPER, // static field access using the "generic static" helper (argument is MethodTable *)
      CORINFO_FIELD_STATIC_ADDR_HELPER,       // static field accessed using address-of helper (argument is FieldDesc *)
      CORINFO_FIELD_STATIC_TLS,               // unmanaged TLS access
++#if COR_JIT_EE_VERSION > 460
      CORINFO_FIELD_STATIC_READYTORUN_HELPER, // static field access using a runtime lookup helper
++#endif
  
      CORINFO_FIELD_INTRINSIC_ZERO,           // intrinsic zero (IntPtr.Zero, UIntPtr.Zero)
      CORINFO_FIELD_INTRINSIC_EMPTY_STRING,   // intrinsic emptry string (String.Empty)