Simplify the logic of accessing codec function for specific TYPE
diff --git a/skeletons/OCTET_STRING.h b/skeletons/OCTET_STRING.h
index 7261992..59f8848 100644
--- a/skeletons/OCTET_STRING.h
+++ b/skeletons/OCTET_STRING.h
@@ -35,6 +35,9 @@
 per_type_decoder_f OCTET_STRING_decode_uper;
 per_type_encoder_f OCTET_STRING_encode_uper;
 
+#define OCTET_STRING_constraint  asn_generic_no_constraint
+#define OCTET_STRING_decode_xer  OCTET_STRING_decode_xer_hex
+
 /******************************
  * Handy conversion routines. *
  ******************************/
@@ -81,6 +84,8 @@
 	} subvariant;
 } asn_OCTET_STRING_specifics_t;
 
+extern asn_OCTET_STRING_specifics_t asn_SPC_OCTET_STRING_specs;
+
 #ifdef __cplusplus
 }
 #endif